More Chain Rule (NancyPi)

Published on October 23, 2019 by

MIT grad shows how to use the chain rule for EXPONENTIAL, LOG, and ROOT forms and how to use the chain rule with the PRODUCT RULE to find the derivative. To skip ahead: 4) For an example with an EXPONENTIAL function that needs the chain rule to take the derivative, skip to time 0:32. 5) For an example with a natural LOG, skip to 2:34. 6) For an example with a SQUARE ROOT, skip to 4:41. 7) For how to use the CHAIN RULE with the PRODUCT RULE, and how to know which to use first, skip to 7:17. For an introduction of HOW and WHEN to use the chain rule, jump to my FIRST chain rule video: Nancy formerly of MathBFF explains the steps.

Support Nancy on Patreon:
Follow Nancy on Instagram:
Follow Nancy on Twitter:

The CHAIN RULE is one of the derivative rules. You need it to take the derivative when you have a function inside a function, or a "composite function". This video picks up at the end of the first chain rule video ("Chain Rule...How? When?" at and shows more examples of using the chain rule, as well as how to combine the chain rule with the product rule.

For an intro of how to take derivatives, jump to:

4) EXPONENTIAL: for the example y = e^(3x), first take the derivative of the outside function (the exponential function, e). The derivative of the exponential function is just the exponential function itself. When writing the outside derivative, leave the inside function (3x) the same, so write e^(3x). Then by the chain rule, you multiply by the derivative of just the inner function (3x). Since the inside derivative is 3, the answer for the full derivative dy/dx is 3e^(3x).

5) NATURAL LOG example: To find the derivative of y = ln(5x), use the same steps as above to first take the outside derivative and then multiply by the inside derivative. 5x is inside the natural log. The outer function here is the natural log, ln. To take the derivative of the natural log of something, we write 1 over that something, so 1 over 5x. We leave the inside function alone here when writing the outside derivative, so we write 1/(5x). Remember that we're not done yet. We also need to multiply by the derivative of the inside function. The derivative of 5x is just 5, so our final simplified answer for dy/dx is 1/x.

6) SQUARE ROOT example: For this example, y = sqrt(x^2 + 1), the x^2 + 1 is under a square root. The square root is the outside, outer function. When you have a root of any kind, before you take the derivative, it's easiest to rewrite it in the form of a fractional power, so that you can use the POWER RULE when taking its derivative. The outside function here is then the 1/2 power, and the inside function is x^2 + 1. To take the derivative of the outside one-half power, we use the power rule to bring down the 1/2 power to the front and reduce the old 1/2 power by 1. We then multiply by the inside derivative, and after simplifying get a derivative of y' = x / sqrt(x^2 + 1).

Here I used Lagrange notation (y') for the derivative instead of the Liebniz notation from before (dy/dx). To learn the POWER RULE, jump to my video at:

7) CHAIN RULE WITH THE PRODUCT RULE: Sometimes you might need to use the chain rule combined with the product rule. How do you know whether to apply the chain rule first, or the product rule first? In this example, y = x^3 (2x - 5)^4, although the second factor here will need the chain rule for its derivative, overall in the biggest view of this function, we have a product of two factors. So we will use the product rule first here on the two factors, and then use the chain rule inside the product rule. However, for an example like ln[x^3 (2x-5)^4)], you would need to apply the chain rule first on the ln form, and then since your inside function is a product, you would need the product rule after that. Basically, the first thing you'll do is whatever you need to use to handle the outermost form of your function.

For more calculus math help and videos, check out:

Editor: Miriam Nielsen of zentouro

Category Tag


Advertise here. Telegram, Signal - Call/message +1-868-308-4028.


  • Jesus Aguilar 3 years ago


  • Metal Knight 3 years ago


  • shomii 3 years ago

    shes back

  • Harjeet Kumar 3 years ago

    Good job at explaining all at one place. Thanks for sharing the knowledge!!
    Peace ✌️!!

  • krager54 3 years ago

    Oh my god, perfect timing. Not only did I just find your channel, but we are literally learning the chain rule this week. haha

    Your videos have been instrumental in my understanding of differential calc. Thank you so much!

  • Yaman Hussein 3 years ago


  • Alex Minsky 3 years ago

    Yay, Nancy’s back!

    • Juan Barrios 3 years ago

      Thank you, god!

    • ALL CAPS 3 years ago

      YAY MATH

    • SXCRΞDツ 3 years ago

      Alex Minsky is she now

    • Armyboy 10111 3 years ago

      @SXCRΞDツ Merely a brief concession, I assure you.

  • music 2 mu 3 years ago


  • Don Jabra 3 years ago


  • tessa brooks 3 years ago

    Welcome back!

  • cjeelde 3 years ago

    You’re really one of the best math teachers I’ve ever seen 😍😍 watched so many of your videos to refresh my knowledge and I have no words for how much I appreciate you 😘😘 I wish I had your channel to watch when I was in school so I could have you as my 2nd teacher. You are THAT amazing!! I truly love you with all of my heart ❤️❤️

    So curious about how your videos are filmed/made when you write 😚😚 is that a top secret or is it possible to reveal that secret someday? 😍

    You are sooooo best!!! ⭐️⭐️⭐️⭐️⭐️ (5/5 stars!) and a bonus: heart with stars -> 💖

  • Zee Ali 3 years ago

    I have to get an A on this next math test 😭🤯

    • Zee Ali 3 years ago

      Vsk good luck! Keep positive and study hard. Don’t wait til last minute to study either.

    • Vsk 3 years ago

      @Zee Ali thank you and goood luck to you too.

    • Vaiebhav Patil 3 years ago

      @Zee Ali how did it go?

    • Zee Ali 3 years ago

      Vaiebhav Patil really bad. Almost makes me wanna give up on this next test… but I have to do extremely good 😭😭

    • Egg 3 years ago

      Too late for me, unfortunately. I’m gonna have to pull an all-nighter to finish up my homework and I will be praying hardcore for an A on the test tomorrow. At least I understand nearly all of the concepts about derivatives thus far (the exception is related rates).

  • Travis Fro 3 years ago

    Nancy is my spirit animal

  • IamFrancoisDillinger 3 years ago

    Awesome, my Derivatives test is Monday. Perfect timing!

    • LorD TwisT 3 years ago

      Same here

    • IamFrancoisDillinger 3 years ago

      @LorD TwisT I predict we will both get A’s.

    • Math and Logic 3 years ago

      May the derivative of your grades be ever positive.

    • d.d 3 years ago

      Mine is on Tuesday. Let’s do well brothers.

    • *Floofy shibe* 3 years ago

      DV I would prefer it be a gradient of zero. maximum of course

  • Nomon Munir 3 years ago

    wow i’m too old to remember this. but i do love her ethic

    • Puff Dragon 3 years ago

      Yeah, me too. I love her “ethic”.

  • dave forfav 3 years ago


  • M 3 years ago

    Thank you Nancy ❤ keep on

  • jabberwolf 3 years ago

    Good explanation but your and my party tricks .. are in separate galaxies far far away 😉

  • Mayacocoice 3 years ago

    youre the only math teacher I actually learn something from, thank you for coming back and saving my grades<3

  • saud awwad 3 years ago

    I think there is another easier way that is multiple ln both side because in ln properties you can bring the square behind ln for example ln(3x)^2 =2ln(3x)

  • RogueShotz 3 years ago

    I needed this. No cap.

  • Julian Whippy 3 years ago

    Hey Nancy thanks for helping me understand chain rule now, you’re the best and super cute ❤❤❤

  • CorupptedKev 3 years ago

    Queen uploaded 😤

  • Andrew ta 3 years ago

    Test tomorrow im sad

  • L B 3 years ago

    Welcome back!!!

  • Mr Ch33seHed 3 years ago

    Yes! More chain rule…definitely need it.

  • Cesc VR 3 years ago

    Cool, you’re back!
    I’m gonna share this new video to my students. Thanks


    Not going to lie I thought you died

  • g man 3 years ago

    You make feel ready to take on the North Shore Mathalthes for the state title

  • Yousuf Ali 3 years ago

    Oh Wow are you staring to make new content again?

  • hans 3 years ago

    good refresher

  • محمد الجابري 3 years ago

    Welcome back queen of math

  • Jeremiah Carr 3 years ago

    Holy shit shes back

  • Thor Odinson 3 years ago

    Bruh first upload in 7 months nancy, what happened?

  • Charlie Morris 3 years ago

    Hi Nancy, I do find math interesting, but I get bored and sleepy quick, especially when I am studying math topics. (Failing advanced algebra.)

    I guess my question is how do you keep yourself motivated and energetic to keep studying math?

    Like how do you keep math exciting? How do you break down mathematical topics?

    You’re probably thinking that this is a stupid question, but I need advice. Please help.

  • reblchemst 3 years ago

    Welcome back Nancy. Hope all is well.

  • İlke Uyanıker 3 years ago

    So stresfull for my midterm..

    • True guesser 3 years ago

      Someone paid attention ✌

  • nick d 3 years ago

    Integration by parts.

  • Joshua Fallon 3 years ago

    Wow how did you know I had an exam tomorrow on this lol

  • macy zenier 3 years ago

    bless your timing with this video 😂🙌

  • Sciphere 3 years ago

    now do chain rule for partial derivatives

  • Jack P 3 years ago

    She lives!!!

  • Abel Lopez 3 years ago


  • Rickie Bobbie 3 years ago

    Where have you been? I need your videos. Perfect timing on this one, literally just watched all your others on derivatives last night. Should do videos with loads of examples, would pay for it tbh

  • محمد فيصل 3 years ago

    Titans Nancy, but why the derivative of e is e ?

  • Karles McQuade 3 years ago

    YAY! The internet’s best math pedagogue has returned! Welcome back!

    • DAVID DJJD OLAVARR 3 years ago

      Pedagogue; A teacher, especially a strict or pedantic one.

    • Karles McQuade 3 years ago

      Jeremiah Diaz The word is used as a term of art among teachers to refer to someone who is skilled and experienced in that field. Remember that dictionaries don’t always tell you the whole story.

  • HPLIQ 3 years ago

    It’s been a long time…..

  • Duncan Carter 3 years ago

    NANCY !! Its so great to see you back. I literally have a test tomorrow involving chain rule LOLOL

  • محمد فيصل 3 years ago

    Welcome back and I hope you all time number one

  • Aaran Chauhan 3 years ago

    Hii Nancy! It’s been a while 😊

  • Neel Patel 3 years ago

    Glad you’re back!!

  • Davi Lima 3 years ago

    Hey NancyPi may you please add Calculus 2 content video. Also perhaps Physicis kinematics and etc. Thank you

  • syousef 3 years ago

    Do L’Hôpital’s rule next please

  • Douglas Henry 3 years ago

    More NancyPi

  • Hamid S 3 years ago

    Nearly cried when I saw you’re back…..jk but seriously glad you’re back 😄

  • Yohannes Nurga 3 years ago

    Welcome back nancy

  • hipchocolatechip 3 years ago


  • Infinite Fractals 3 years ago

    Nancy has appeared. 6 more weeks of winter

  • Gonçalo Freitas 3 years ago

    Very nice video! Thanks Nancy!
    Just a quick note about the result in 3:49
    ln(k*x) = ln(k) + ln(x) (property of logs)
    d/dx(ln(kx)) = 0 + 1/x = 1/x (k is a constant)
    When I went through this result I found it very interesting, so thanks a lot for making me more curious!

  • Theoneandonly88able 3 years ago

    Keep uploading please I really enjoy these videos to help with math. For those who are looking for an alternative to Nancy during inactivity is professor Leonard and Michel van biezen. They’re both equally good in teaching.

  • amoxintubeu 3 years ago

    Where have you been? Anyway, I’m glad you are back.

  • abderrahim jaadani 3 years ago

    I missed u !

  • DAVID DJJD OLAVARR 3 years ago

    Hola Nancy, glad to see you and welcome back. Even though I do not need any more algebra classes it is a pleasure to see you at it, again. Just so you know, I took advantage of your classes in the past, there were very helpful. Thank you.

  • TheInfiniteNine 3 years ago

    Glad you’re back!!😭 thanks so much for making calculus easier to understand! Hope to see you do some higher level calc (2/3) and diff eq videos in the future!

  • Rodelio Orante 3 years ago

    thank you for the update. You’re the best very clear explanation I also really love you so much welcome back!

  • Вадим Грицюк 3 years ago

    Great! Nancy’s come back! I’m really happy!

  • Haris Y 3 years ago

    I passed my calc exam but in about a year I would probably take linear algebra- hope you get some videos on it by then lol

  • Girolamo Aloe 3 years ago

    Welcome back. 🙂🙏

  • Ryan BurnsRed 3 years ago

    Holy cow she’s back!

  • Arbaaz 3 years ago

    My lord and savior is here

  • Nandan Shah 3 years ago

    Nancy pi is my crush.

  • raul ferri 3 years ago

    Nancy is very good at it, and I recently followed her videos of Mathematics. I think and I am convinced that a complete video course of “Mathematical Analysis” 1 must start for many interested in this discipline. I hope you follow my simple advice soon Nancy and good work.

  • Daniel Maclaren 3 years ago

    When my grades needed her most, she vanished

    • Dennis Bolanos 3 years ago

      @Daniel Maclaren That’s hilarious.

    • Igotbirdspigeons 3 years ago

      Bruh lol

    • Connor Haynes 3 years ago

      The year is 2020, the 31st of March. NancyPi came back, but disappeared 5 months ago, and still missing.

    • Åtlas Fritz 3 years ago


  • John Clark 3 years ago

    welcome back! 😀

  • Colin Anderson 3 years ago

    You’re back!!!

  • Tyler DeWitt 3 years ago

    Love it!

    • Rat Puppet 3 years ago

      Omg, Tyler DeWitt!
      Sir you are the greatest Chemistry and Biology teacher!

    • Kishore Subramani 3 years ago

      Please do chemical kinetics, electrochemistry videos

  • Amit Majoka 3 years ago

    I love you 😘 Nancy

  • Michael Maxwell 3 years ago

    Is this your first video in about a year? Glad to see you back!

  • Asraful Bhuyan 3 years ago

    Ur center of my universe

  • Lil Ugly Dude 3 years ago

    lets go calculus

  • Gerardo Leon 3 years ago

    Nancy’s back.

  • New Notification 3 years ago

    I wish you were my math teacher.

  • funk monk 3 years ago

    Omg I literally failed my midterm today because I was lost on the chain rule. You must’ve heard my prayers. Queen.

  • Geoff 3 years ago

    Your videos really are so helpful, thanks a million 🤙🏼

  • Vince Matthews 3 years ago


  • Brian Chen 3 years ago

    Nancy, never replied after I sent you those worksheets😪

  • Mario Rossi 3 years ago

    Glad to see you again.

  • ΣχζαΙιβυΓ 3 years ago

    After 7 months, she’s back.

  • TASSE FX 3 years ago

    2019 still love her

  • Huseyin Cizer 3 years ago

    Great refresher on this topic thanks Nancy!

  • Vince Matthews 3 years ago

    I love the awkward math humor XD

    • Kshitish Sorte 3 years ago


    • Charms GD 3 years ago

      I love it as well haha, it’s like semi-enthusiasm

    • Raanoooshh 3 years ago

      @Kshitish Sorte it’s where she takes the derivative of ln 5x

    • Kshitish Sorte 3 years ago

      @Raanoooshh can you please give the time stamp

    • Raanoooshh 3 years ago

      Kshitish Sorte 3:54

  • Shawn Kuriakose 3 years ago

    No love for Trig Inverse derivatives??

  • GARTH REID 3 years ago

    @NancyPi for the last question which is the ln function you could have also used the laws of logarithms to simplify then take the derivative

  • CrittingOut 3 years ago

    Just looking for help and found your video :)!

  • Eng-Riad Almadani 3 years ago

    Nice work nancy

  • Ggg Gggg 3 years ago

    Welcome Back Babe! 😘😘

  • yarabamba 3 years ago

    What a surprise. Welcome back.

  • Gaby P 3 years ago

    Story problems with volume and integrals? Partial fractions? Calc2+? I love and need u 😂

  • omkar pawar 3 years ago

    How do write like that

  • Drew Durant 3 years ago


  • La cortina de hierro 3 years ago


  • Voss 3 years ago

    I’d totally buy a NancyPi shirt, just saying.

    • Brandon Fresh 3 years ago

      Just send her money you worthless rat

    • Kxrt. 3 years ago

      Brandon Fresh damn, who hurt you?

    • ys. m 3 years ago

      @Brandon Fresh what the? How rude

    • Fernando Jara 3 years ago

      @Brandon Fresh Onlyfans xD

  • LK-4D4 3 years ago

    Welcome back:)

  • Micah Kunze 3 years ago

    Yay! NancyPi is back!

  • Premkishor Sagolsem 3 years ago

    ♥️ u from India 🇮🇳

  • burikat burikatsu 3 years ago


  • Javier Gonzalez 3 years ago

    Do Linear Algebra videos

  • kxmode 3 years ago

    1:22 having the video speedup for “e” by itself. lol ! Also welcome back. 🙂

  • Zealous TV 3 years ago

    Also damn she uploaded after 7 months damn

  • Maggie Carolin 3 years ago

    yay welcome back! we missed ya

  • Anna Blobaum 3 years ago

    My test over this was yesterday!!! Not mad, just a coincidence lol

  • Walt R. Buck 3 years ago

    Is the chain rule the one that requires the mother function? lol

  • Bangladeshi Soldier 3 years ago

    If you had uploaded it before two days,…………..
    My exam 😟😟😟

  • Anthony Warner 3 years ago

    thanks for coming back! please never leave us again 😅😅😅

  • Daniel Heckel 3 years ago

    Just noticed you’re no longer an MIT *student*. Congatulations grad!

  • Jay Liu 3 years ago

    Nice to see you making more videos Nancy. I thought you’d stopped.

  • h1mb 3 years ago


  • Michael Henry 3 years ago

    Glad to see you are active again ….. Hopeful again

  • sgedeon01 3 years ago

    Welcome back Nancy. You’re awesome

  • Wasee Ab 3 years ago

    The return of the math queen!

  • Josh L 3 years ago

    Yes!!!!!!!!!! She’s back

  • vrendus522 3 years ago

    Have never seen this video. Do not know if she’s a clone or not, but she does know math. Thank you.

    • Veritas et Aequitas 3 years ago

      She looks a little different. I’m suspicious.

  • Kishore Subramani 3 years ago

    Happy to see you back nancy please do video’s on 3D Geometry

  • The MARR 3 years ago

    We need you!

  • Neve Catalani 3 years ago

    Good work Pi.

  • SteveNancy 11 3 years ago

    Finally, A new video after so many months.
    It felt like a decade. Lol

  • Kian Persian 3 years ago

    u=f(x) , y=e ^ u , u’=df/dx =>
    dy/dx= u’.e^u

    And the same we can do for others

  • James Lindgaard 3 years ago

    You make it all seem so simple. If I learn from you then people will think I am smart. That works for me 😊

  • joseph c j. idukki 3 years ago


  • Wessam Hamadneh 3 years ago

    Our Hero is back to the rescue … she saved me during the dark days of Calculus, glad those days are over haha…thank you

  • BobC 3 years ago

    Wow, this was a birthday present I wasn’t expecting. Thanks!

  • bluehorseshoe444 3 years ago

    Thought she was done with YouTube and getting rich on Wall St

  • Xboxservices 3 years ago

    Sorry I cant count that high

  • Vincent Dang 3 years ago

    Please do discrete math videos

  • SpongebobFan1127 3 years ago

    I just subbed yesterday and was surprised to see an upload

  • Cristian 3 years ago

    I am in love 😍

  • Pissed Off Billie 3 years ago

    Thanks for the videos Nancy! You’ve carried me through Algebra 2 so far this semester! Keep doing what you keep doing best!

  • Tyler Matthew Harris 3 years ago

    Thanks! 🙂

  • Real_Guy 3 years ago

    Please don’t go Nancy D;

  • Inne Cogneto 3 years ago


  • Ty Bargky 3 years ago

    Please make more videos 🙂 I’m a engineering student and you help me stay ahead in Calculus 1 w/ analytical geometry

  • Leo3ABP gaming 3 years ago

    Long time no see. Welcome back!
    Now how about some double and triple integrals for calculating volume of solids bounded by some awkward functions? 🙂

  • Dave Deatherage 3 years ago

    Excellent, you explained it till where I get it. Thanks Nancy Pi

  • XWAKAxGAMINGX 3 years ago

    Could you do related rates

  • LorD TwisT 3 years ago

    I don’t like math but I did like your video🙂

  • legulas me 3 years ago

    Welcome back…

  • Prometeo Alexander 3 years ago

    I need you in my Life

  • Er Umesh Patel 3 years ago


  • C R 3 years ago

    Welcome back. You are an actual life-saver, just so you know.

    • Veritas et Aequitas 3 years ago

      Why, did your teacher say you literally couldn’t do math to save your life and then hold you at gunpoint?

  • LOST ART 3 years ago

    I am glad to know you are back with interesting math topics. Can you explain some Physics problems like equations of motion with the help of graph? PLEASE . PLEASE.

  • Lord Carl 3 years ago

    She’s still hot.

    • Ikhtiar Hossain 3 years ago


    • Tuan Pham 3 years ago

      Imagine sexualizing and ultimately making the person that carried your math grade feel uncomfortable?! Couldn’t be me

    • bridge 4 3 years ago

      @Tuan Pham how do u know she carried his or her grade?

  • PKRUBEET 3 years ago

    Shes back

  • LATUS BIKERS 3 years ago

    im distracted by her eyes

  • Stella 3 years ago

    You’re back!!! Your videos helped me through highschool now I’m in college and I still need it😂 thanks Nancy!

  • Meffy Gravio 3 years ago

    she just makes it easy to undersand…. be blessed

  • Minh Duc 3 years ago

    Better than EDDIE WOO!!!!

  • Alok Singh 3 years ago


  • Juan Diego Soto Lopez 3 years ago

    posted this at the right time omg yezz

  • Sang Bryan 3 years ago

    Crazy idea…Lets always submit math problems: just to bring her to a daily upload rate

  • burhan shah 3 years ago

    Hurray! NancyPi is back.

  • Claurence Palpagan 3 years ago

    Hi! Can you make a video about the application of indefinite integrals?

  • Lionello Sacchi 3 years ago


  • 79M views 3 years ago

    Keep going please…i am passing math because of you

  • jerseyboym5 3 years ago

    You’re a great teacher! Thank you for this video, can you also go over Rates and Absolute maxima / minima in a closed interval. And critical points ? Thanks keep doing these you are actually educating us unlike our dry ass professors at school

  • same Ok 3 years ago


  • Alan D 3 years ago

    Nancy, you are super smart and super pretty, I’m glad to see you back!

  • musalsal somaali 3 years ago

    We went complex number sister

  • Jerry Wu 3 years ago

    Nancy finally came back!

  • MDU NTR 3 years ago

    Hit like before the ad even finished playing… NancyPi never lets me down…

  • Nirre 3 years ago

    I was just thinking about her…and here she is 😅 also this is the exactly what i needed help with wow…

  • Nirre 3 years ago

    Is she cute or funny? Im confused 😅

  • Mouleesh 3 years ago

    she’s back

  • Anish Gupta 3 years ago

    We need regular updates

  • Dontai's Nose Ring 3 years ago

    I don’t really care about homework. I just wanna see her beauty.

  • Epic Math Time 3 years ago

    welcome back!

  • Batti Nar 3 years ago

    Thank you so much ♥️ love your videos

  • Stacy Yardley 3 years ago

    Ya still got it, so beautiful. Yes i do mean your wonderful brain.
    Your beautiful to very

  • Ash Lele 3 years ago

    The inside function my teacher says intestines haha

  • Gravity_Well 3 years ago

    wow. a gift from god. my math test is today and this video just came out

  • zenterno1579 3 years ago

    Advanced calculus?anyone😕

  • DevilsHand676 3 years ago

    Nancy where have you been, i’ve been failing calc 2

  • Ceaz 3 years ago

    It’s like she knows that I am having a calculus test today on derivatives lol THANKS!

  • Khalil Wise 3 years ago

    Half of us haven’t taken a calc class in 2-3 years but we still support you 😂😂!

  • Mickyle 3 years ago

    Where were you when I needed you the most?!! just kidding. am happy that youre back!!!

  • Blue 3 years ago

    She is fire!!!! I love u!!! thanks for getting back at it gorgeous!!!! GO NANCY!!!! #NancyPi

  • David Hill 3 years ago

    gosh 7 months have passed. I hope you are well but i would so love to see regular videos from you if you have the time.

  • Robert W Norris II 3 years ago

    Comments are back.

  • Vedat 3 years ago

    please go on cuz i need u !

  • Muhammad Ahmad Yousaf 3 years ago

    hi nancy .. long time no see..
    but it’s good to have you<3 back

  • Johnny Sparkleface 3 years ago

    When it comes to math, I need all the explanations I can get, and you’re the best explainer there is. I failed every math class I ever took, in high school and college. After wearing out my teachers, tutors would try, I wore them out too – and not just a few. Nobody could get through to me. It was very depressing. Then you came along, and I’m actually understanding what you’re saying. Mr. Hopeless is finally learning!
    By the way, I’m way past needing math for school or work, but I just hate to let anything beat me. Thanks for coming back, you’re the gift that keeps on giving.

    • Pruke 3 years ago

      You “hate” let anything beat you but you were happy to let it beat you through the whole of your education?

    • Johnny Sparkleface 3 years ago

      @Pruke You’re putting words in my mouth. I never said I was happy to let it beat me. Go away, you’re not being helpful.

    • Pruke 3 years ago

      @Johnny Sparkleface “but I just hate to let anything beat me” its literally a quote lol

  • Greesha 3 years ago

    Nice content and I do have tons of stuff on Chain rule so if you are interested you can check me out

  • ggg hhh 3 years ago

    What a great party trick.

  • Jerico Misamin 3 years ago

    Welcome back Nancyyyy

  • Christopher Donohue 3 years ago

    I dont even have calculus anymore but I still watch your videos. You’re definitely the best at explaining it to me like im a monkey (i am a monkey so i really appreciate it)

  • Kshitish Sorte 3 years ago

    yaaaay she’s back.

  • Thịnh Nguyễn 3 years ago

    Your editing skill is incredible. I would love to see you making videos about matrices and differential equations

  • Unknown User 3 years ago

    Can I integrate you into my life ?

    • Marlen Reyes 3 years ago


    • rajat chaubey 3 years ago


    • Klutch Boi 3 years ago

      She is a non integrable function

    • *Floofy shibe* 3 years ago

      Unknown User Do you know what her +c is? If you weren’t there at t=0, then it will be difficult

  • OmG 3 years ago

    I’d love to see linear algebra, multivariate calculus stuff! 😃

  • Ejderha lordu 3 years ago


  • abdullah evazi 3 years ago

    Welcome back Ms Nancy and Thanks for the great video

  • Axel Perez 3 years ago

    I don’t know what your video is about, but I sure enjoy watching you explain your subject.

  • Zachi Evenor 3 years ago

    Let a be a constant. Then: {ln(ax)}’ = {ln(a) + ln(x)}’ = {ln(a)}’ + {ln(x)}’ = 0 + {ln(x)}’ = 0 + 1/x = 1/x Q.E.D.

  • Math and Logic 3 years ago

    Please don’t let this be the only video for another year.

    • Danana J 3 years ago

      Just like a high-class tutor, you have to pay to see the full content.

  • LMZD 3 years ago

    I was not familiar with derivatives when they (teachers, books etc.) wrote them like d/dx because you almost never use that expresion. It would be nice if you wrote it like that before you actually derivate. Just helping the ones just learning them. Thanks btw you helped me a lot in HS. I´m studying physics now

    (freshman) and your videos are still very useful.

  • Mkq_ 10 3 years ago

    Can you do a video about the Intermediate Value Theorem?

  • P A V E L 3 years ago

    Hey Nancy..good to see ya back!..can u do more subjects like physics and chemistry concept videos??
    It will be amazing!

  • TK421 3 years ago

    We want ODE’s and PDE’s please.

  • Graham Phillips 3 years ago

    Hey Nancy – great video, and great to see you back!

  • Mokhele Hlalele 3 years ago

    Tell me you are not going to disappear AGAIN .

  • Tech Supporter Guruji 3 years ago

    Nice from India

  • Chance 3 years ago

    welcome back

  • Terry Williams 3 years ago

    Can you do some more intense chain rule problems?? Like with trig functions and how to find the derivative of a trig function at a point.

  • buzz na buzz 3 years ago

    Excuse me..can you show me the program that you use please ..

  • ListentoGallegos 3 years ago

    That last derivative screams logarithmic differentiation.

  • Worldstudent gatkuoth Bidong 3 years ago

    Waaw Nancy nice to be back !!!!!!!!!!¡!

  • Amit Kumar 3 years ago

    I love you Nancy

  • Fareed Muhammad 3 years ago

    she is back

  • Akin Pedro 3 years ago

    I’m genuinely so happy that she’s back

  • Nagendran Amarnath 3 years ago

    Long time no see

  • Nagendran Amarnath 3 years ago

    Do tuff problems

  • P Brooks 3 years ago

    Well, I’m seduced.

  • Heikki70 3 years ago

    Thanks Nancy. You are excellent teacher.

  • R Alajmii 3 years ago

    My calc test is after 3 hours and u saved my life, ty

  • Dynamo Altis 3 years ago

    Gosh Nancy, u still hot.

  • David Lappert 3 years ago

    This timing is impeccable. Literally taking an exam tomorrow.

  • Welfare Association for Abdus Sattar Memorial 3 years ago

    If she had become my college teacher the student attendence will rise to 200%

  • Jeff Graf 3 years ago

    Hey, heres a “fun party drug” . If you take the derivative of e ^( ax ), and do it again, you get a^(2) e ^ (ax). So .. if a = i, or sqrt(-1) then f”'(x) = ‘f(x) . thats the wave equation! It describes an ideal spring or pendulum! do a shot! You are ready for FFT and radar!

    • Jeff Graf 3 years ago

      That should be f ‘ ‘ (x) = -f(x)

  • AnselAlly 3 years ago

    I miss you Ms.Nancy I begun calculus at University and I feel like an utter dunce.

  • Bryan Proa 3 years ago

    Could you do some stuff on sequences and series? Probably the most I’ve ever been confused in cal.

  • Kishore Subramani 3 years ago

    Please🤗 add a video on “Derivatives of Functions in Parametric Forms”in your derivatives playlist.That’s too being incomplete seems to be very rude 😒.I hope you will.😃

  • DIDA DUDE 3 years ago

    WHAATTT! STILL SEARCHING YOUTUBE FOR MATHS HELP, ARE THE VIDOES FROM 2006 REALLY HELPING….. this is the shit i have to deal with on daily bases!!

  • hermit bamboo 3 years ago

    i wish i have access to this channel several years ago. now i am already junior or senior level in college and only grad level math can help me.

  • Stephen Oberoi 3 years ago

    can you make a video on how to get the inverse of a matrix….?

  • Justin Lee 3 years ago

    For the derivative of y=ln(5x), you could have used properties of logarithms as ln(5)+ln(x) first and then take the derivative, which is y’=1/x.

  • Dilzar Bamerny 3 years ago

    Hi NancyPi, thanks for your videos. I need a sol. Of an eq.
    Could you find the value of X please in this eq. : sqrt(5-4x^2+8x)+sqrt(8x-4x^2)=9-8x+4x^2

  • Mahendra Goyal 3 years ago

    Good to see you are back. You looks like Elve princess this time.

  • Bilal S 3 years ago

    please upload regularly again

  • Cabdi Raxmaan 3 years ago

    Why do not write the most hard lesssons and formulas in calculus

  • FaZe Jay 3 years ago

    Thank you this really helped!🙏 Can you teach how to foil?

  • fingercrack 3 years ago

    shes between Angelina Jolie and Jennifer Connelly

    • IN THE SHOP 3 years ago

      I think she is genuine, her own person. I would love to see Angelina and Jennifer solve these issues own their own. Would make for great content. Yes, Nancy is pretty and has a beautiful voice but I would rather brains over beauty any day of the week. I even ask Nancy if she was married before. I should not have done that.

    • Андрей Филимонов 3 years ago

      like Elisa ‘Dushku

    • Tarun Srivastava 3 years ago


  • Etta Wang 3 years ago

    yessir she’s back!

  • Victor 3 years ago

    Is she honestly writing mirrorized?

  • Cindy Charbonneau 3 years ago

    Thanks for your videos! Much appreciated!
    What if you have a negative exponent, and higher exponents, for example:
    Log base 2 (x^4 + 3^-3x^5^x^3) ?

  • Venus Z 3 years ago

    You literally helped me graduate so I don’t even take math in college nor do I like math AT ALL but I still watch your videos. You’re an angel!!

    • Paul Price 3 years ago

      Venus Zambrana Nancypi doesn’t just talk to anyone. You must be someone of advantage to her.

  • Miah 3 years ago

    Can you do a video on related rates PLEAAASE

  • AshLaka Productions 3 years ago

    Your explanation is very clear 🥰❤️

  • Shaoor Fahim 3 years ago

    What are you doing these days Nancy ? I watched you 5 years back on the other channel…. you were in MIT at the time.

  • Balakrishna Prasad 3 years ago

    Your videos are very helpful to me mam and you are so cute💓💓💓💓💓

  • William 3 years ago

    Great to see you back!!

  • AGirlHas NoName 3 years ago

    Why is 3x the “inside” to me it looks like a power rule

    • EtoVito 3 years ago

      Because it’s not a function raised to some power. For example, x^3 is the function x to the third power. However, e^3x is the constant, e, raised to a function. You can’t just power rule the e because it’s a constant, not a function. The power rule works when you have a function raised to a power, and by that definition alone, you can’t power rule a constant.

    • AGirlHas NoName 3 years ago

      EtoVito okay, that made sense to me. Thank you for helping me understand why it’s not a power rule.

  • Michael Hollins 3 years ago

    Just when life begins to look bleak, NancyPi returns. Missed you Nancy.

  • Darrell Ponce 3 years ago

    Do how to solve quadratics and linear equations when they’re together

  • LowJack187 3 years ago

    NancyPi is smart!

    It could have turned out different; But it didn’t!

  • Art Art 3 years ago

    Please upload more calc! You are a life saver!

  • Scott Forslund 3 years ago

    What happened to the 8x cubed when simplifying the last function?

  • Kristoffer Wall 3 years ago

    Hello and thank you, Nancy. I’m new to derivative and the chain rule so this helped me a lot!
    subbed and looking forward to future videos! Cheers!

  • electro tec 3 years ago

    Oh you look so wawawawa 😍😍😍

  • RNBRooke 3 years ago

    I think we need a relative rates video

  • Precision 3 years ago

    Why the long break? Post more please.

  • David Ivey 3 years ago

    On “y = e^3x” why is e the outside function and 3x the inside function? I would have thought it would be the other way around.
    For example, in your intro video you had (3x +1)^7 or something similar, and in that case the ^7 was the outside function.
    Actually, why is e a function at all? I thought it was just an irrational number like π.

  • KnowThyself7 3 years ago

    Nancy, you’re a beauty and a legend in theYouTube math world

  • Eric Rodriguez 3 years ago

    Please do a video on antiderivative (:

  • Ali Idriss Oumar 3 years ago

    hello Nancy i’m a new suscriber to your channel actually your videos really help me thanks for making such kinda videos but i need to ask you about the derivative of the last function ln can you please do it for me I’ve tried but I don’t know if it is correct or wrong

  • EradicationX | Today 3 years ago

    Hello 🙂

    ur vids helped me with my a levels 🙂
    now im in uni 🙂
    doing comp science 🙂
    struggling with discrete math 🙂
    please do discrete math 🙂
    thank you 🙂


  • BABU RAJAN 3 years ago


  • Alastair B 3 years ago

    Party tricks!

  • xRay 3 years ago

    Just when my calculus lecturer started talking gibberish, the youtube algorithm delivered to a frustrated me, a piece of NancyPi. Thank you for your work, I can already see an A in this class. (Recently Subbed)

  • Muhammad Asim 3 years ago

    i am badly stuck in laplace transforms.i have my exam on coming saturday.kindly suggest me something

  • Muhammad Asim 3 years ago

    i am EE UG here in PK

  • kamyar fatahi 3 years ago

    Welcome back angel 💕🌹😍

  • BabyPharaoh 3 years ago

    Could you start doing videos on Multivariate calculus… i need halpp

  • Xavier Shen 3 years ago

    Thanks so much I’m doing maths course part time. Your videos is most useful !

  • Dark Dvash81 3 years ago

    yesss beautiful!! .. just have to say it

  • Martin Ovcharov 3 years ago

    PLEASE!!!Do you write with right or left hand…

  • Lakshan Costa 3 years ago

    upload more videos on math we need your help

  • Dan Condor 3 years ago

    Hey, Nancy, could you please do a video on how to convert from standard form to vertex form and vertex form to standard form? My math teacher sucks you are my only hope to pass math!!

  • runforest 3 years ago

    I know how you are writing backwards, you are using a mirror and a green screen. Welcome!!


    I understand everything Nancy teaches. She’s one of the best math tutors. Thank you Nancy

  • Rami Solipe 3 years ago

    what the app or software you use ?

  • Jalmighty 3 years ago

    I owe you my life….

  • Srivardhan 3 years ago

    Pls do video on multiple integrals

  • Christina Jacobe 3 years ago

    Calc exam tomorrow and your videos have been a live saver! I swear the last three weeks of lecture haven’t even skimmed the surface of what they want us to do

  • Jason Gurtz-Cayla 3 years ago

    Helping me review my differentiation and integration for probability class. There is fun Fun FUN beyond calculus XD

  • I love puppies 3 years ago

    U are so pretty and smart. Marry me . Love from Australia 🥰

  • Titan Ian 3 years ago

    A few hours to my test and I’m here for rescue!

    • Titan Ian 3 years ago

      Actually my exam! almost killed me! I only had one problem to apply the quotient rule and it had more intergration!

  • Titan Ian 3 years ago

    7:15 Nancy does the power -1/2 go back to the root? I do understand when it is 1/2, so may I kindly get clarification on that, please!

  • T!me tRavelleR 3 years ago

    NancyPi is the best creator for Mathematics knowledges. I actually created my channel called “Hungry Minds” to even more show important Math Basics. Come check it out and I will always follow back.

  • Ron Chee 3 years ago

    Lord forgive me

  • Anthony Jones 3 years ago

    Where have you been? Your videos have been sorely missed.

  • Yip Wei Kwok 3 years ago

    Love your math video. My math suck. But your video is really helpful

  • Syed Wasim 3 years ago

    if all the subject were being teach like this i would have not go to the university for engineering haha….

  • Vaiebhav Patil 3 years ago

    It’s hard to concentrate on math when someone like her😍 is teaching

    • Sohail Javed abbasi 3 years ago

      Tharki to math parhta ha ya tharak jharta ha hahahhaah😁

  • Vincent F 3 years ago

    Well if all teachers looked as good looking and intelligent as her? Then we would have straight A students in every classroom!

  • Vaiebhav Patil 3 years ago

    Hey can you do a video on Mathematical Logic?

  • 64 Ahmed 3 years ago

    Conic sections please

  • Megan Jacob 3 years ago

    Does anyone know how she films these videos. It looks like she is writing backwards on the screen, what exactly is she even writing on? How does she create this effect and what is the technique behind it? I’ve never seen anything like this before and it’s just purely fascinating.

  • Michael Jetnikoff 3 years ago


  • its ME! 3 years ago

    Oh my God I just liked math for the first time in my life because of U…… Oh my God
    where were all this time ❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️

  • Shafe 3 years ago

    “wait what?… this is awkward”

  • Utarsh Pratab 3 years ago

    Maam can you Please upload your videos regularly, your videos are very very helpful 😊

  • Dymo 3 years ago

    I already know how to do this you see

  • wessel deelen 3 years ago

    I am watching you during my actual math classes.

  • Shania 3 years ago

    I just wanna know, what happened to the ^4 in the 3x^2 (2x-5)^4 after simplifying?

    • Abigail Eli - College Info 3 years ago

      I was wondering the same thing. Did you get an answer?

  • MrZenmancer 3 years ago

    I watched a few videos wondering how hard it was to doing everything writing backwards. Then I realized you were a lefty and now I wonder if is actually easier than writing normally for you.

  • Astxt Lgdotsti 3 years ago

    Thanks bubbie

  • Mofl Mofk 3 years ago



  • Saeed Majid 3 years ago

    Please what about LEIBNITZ THEOREM

  • Jake Lopez 3 years ago

    It’s a fun party trick. Thanks, got it!

  • Alok Singh 3 years ago

    Hello Di[ Sister], please make video on Permutations, Combinations and Probability.. Please please 🙏🏿🙏🏿🙏🏿

  • MushroomKingDom722 3 years ago

    Can someone tell me what this math is used for? Like in real life besides becoming a teacher! Millions of kids learning this crap to never be used. Waste of time

  • L-to-mArs 3 years ago

    lmao have this tmr.. great

  • xRay 3 years ago

    Thanks for the easy A! Couldn’t have done it without you.

  • YAHYE Ali 3 years ago

    Hey Nancy can you do a video of the derivative of equality please

  • Charles Says 3 years ago

    Came in for math, stayed for Nancypants 🙂

  • Alicia Zitouni 3 years ago

    i love you even more <333333

  • Dranoc 3 years ago

    Hehehe my finals is tomorrow. It’s already 1pm, I just started reviewing for Calc 1. Wish me luck! haha

    • haydawg22 3 years ago

      Dranoc dude literally same except it’s 9pm for me too much t minus 12 hours….

  • Lucy Benedek 3 years ago

    Integrals pls

  • Arindam Phatowali 3 years ago

    Please make videos on JEE Advanced exam of India 🇮🇳.

  • Manfred Bismark 3 years ago

    YOU are BEAUTIFUL! Rudi.

  • İzmir li 3 years ago

    please marry with me 🙂 i love youuuuu 🙂

  • jhony angarita 3 years ago

    Si tienes dos rectas formando un ángulo x
    Y sabes todos los valores de las rectas que posibilidad hay de que encuentres el valor del ángulo sin acudir a las funciones trigonométricas

  • taresy6789pp Pang 3 years ago

    Can you show how to pass PWC numerical test plz

  • John Burt 3 years ago

    More Nancy! More!

  • Daisy Bell 3 years ago

    I’ve never known quite how to respond to your videos. Sometimes, it seems like you’re a person who doesn’t like math,… teaching math? I don’t feel much inspiration, at least for math, watching your videos. The impression I get watching your videos is that math is this boring chore we have to do to get through school. I suppose some of us are more actors, actresses, entertainers… and even if anyone agrees with my characterization of your videos, I’m sure there are many people who do see math as a boring chore,… which is often necessary to get through school. Although perhaps there are areas of math in which you’ve done research or otherwise studied extensively because you’re truly interested in them. If there is such math, perhaps you could share that with us.

  • Abdulhameed Warsi 3 years ago

    Doubts just a british thing?

  • Plusplus Ultra 3 years ago

    She looks like Billie Eilish

  • Simon Do 3 years ago

    Hey NancyPi, can you show how math solves real life problems? For example, how math helps to fly spaceship from earth to the moon or Mars?

  • amerrudin 1 3 years ago

    pleasee show to useee completing the squareee… 8x^3 + 9x^2 + 5s + 4 hope u can help nancyyyyy <3

  • Ather Radwi 3 years ago

    So glad to see here in a new video………, but where are you in 2020?

  • ATMA SOUL 3 years ago

    Hello ..u make math so simple. .it’s very easy to understand the way u represent. ..thanks a lot for helping us 😊..god bless you

  • Megan Donnelly 3 years ago

    Hi Nancy This is poem for you.
    Nancy Pi is the apple of my eye
    When I see you write backward
    all I could think about is us being lovebirds
    my dearest nancy
    you help me
    solve problems algebraically
    teaching me math every day
    please never take my nancy away
    Carl Azuz, hes for history
    But nancy is the one for me

    • Lucia Lacourtna 3 years ago

      omg this is so moving

    • Cristina Freire 3 years ago

      i cried reading touching 😭

    • Dr Riff 3 years ago

      she ain’t writing backwards

    • المهاجر التونسي 3 years ago

      @Dr Riff the image is reversed!

    • Dr Riff 3 years ago

      @المهاجر التونسي correct, she’s writing on a piece of glass, with a camera on the other side of it, facing her, then when the video is finished its flipped horizontally (reversed)

  • Mr. E143 TV 3 years ago

    Hi Nancy thank you for this tutorial😊😍

  • Me Thinking 3 years ago

    Chain rule with complex quotient rule??

  • emmanuel camacho crespo 3 years ago


  • Micro Farmers 3 years ago

    Insane how the writing is so neat!

  • Hoot 3 years ago

    Gotta love her “concentration face” when she’s writing x,)

    Really helpful, thanks!

    • Jolly Jokress 3 years ago

      Yes it’s cute especially because she’s like mumbling while doing it 😁

  • Celestial East ph 3 years ago

    can somone explain me how she do in 10:17 the y’= x^2 (2x-5)^3 [8x+3(2x-5)]

  • Ali Humaydan 3 years ago

    God i hate math ,but god i love this instructor. She makes math way less painful.

  • jasraj singh 3 years ago

    Do you have a beauty channel too

  • Gabriel Reyes 3 years ago

    thanks I love u شكرا لاسلوبك الشيق انا احببتك واحببت شرحك

  • Hank Chinaski 3 years ago

    Nancy just found you again. Love your videos. Do you think you could tech some simpler math like basic algebra and geometry? Then if your videos were then ordered from simplest to most advanced someone could teach themselves.

  • kian danton 3 years ago

    10:28 i don’t understand why or how did you get x squared and how you get the (2x-5)cube? can you help me out? ate Nancy?

  • Pinkskin Flesher 3 years ago

    I have lots of confusion

  • Matt Jensen 3 years ago

    She should sell shirts with her name/logo on them… backward.

  • Steve's Favs 3 years ago

    Nancy, will you be offering lessons on Statistics? And btw, thanks for the lessons you’ve been posting. My math skills have gotten a bit rusty over the years and I considered taking classes but I think I will only need to watch this channel to brush up. Take care.

  • Mr. Bleach 3 years ago


  • ciko miko 3 years ago

    God I love 21st century, I can attend to a math class thought by a supermodel DOES IT GET ANY BETTER THAN THAT?

  • Shubham Sikhwal 3 years ago

    M also math teacher ,pls help how to use technology for teaching

  • AudioBook 3 years ago

    I thought it was the “Pantene” ad or something.

  • 3 Kings Gaming 3 years ago

    pls come back 🙁 even if you dont fell you have math videos to post, vlog or do a QandA! you have a great personality

  • siddharth mishra 3 years ago

    U r very cute ….💓💓💓

  • Molalign Alemnesh 3 years ago

    why looks tired .

  • Chris Manhoff 3 years ago

    I got (14x – 15)/[x(2x – 5)] for the last problem. Lots of nice simplification.

  • The Swiss Army Tutor 3 years ago

    Hi guys am a new channel focused on explaining math and eventually physics concepts. Check me out

  • green eggs and ham 3 years ago

    You should do stats and mechanics as well

  • mc007 3 years ago

    thank you so much! I’ve been doing calculus homework all day and did not get this until just now!

  • Shutûr eli Sharrî 3 years ago

    Make videos more often!

  • nothereforlong 3 years ago


  • QuintusMusique 3 years ago

    I’m currently studying for becoming a math teacher and I just discovered your channel. I love the way you’re explaining things ! I hope I’ll be able to help understanding as good as what you’re doing ! Cheers from France

  • Hamzah Ibrahim 3 years ago

    This is super helpful ! Can you make ones for Relations and functions, Straight lines?

  • Lupita Guerrero 3 years ago

    Hi can you please do a video on Matrices? Preferably the Identity using aij please and thank you!

  • Diego Llamas 3 years ago

    please keep making videos they are great. especially for math students. it’s really helpful

  • Bash 3 years ago

    Waiting for next one

  • Prosper Finjap 3 years ago

    Perfect teacher u make it look so easy thanks’s help me a lot

  • Piano Sonata 3 years ago

    Hello Nancy,

    I hope that you’re doing well. Being honest, I’d like to begin by saying that I clicked on the first video that I saw of you, “Logarithms… How?”, because of your physical beauty. However, during that video, I realized that you were much more than just looks, as you constantly not only showed that you’re intelligent by comprehending complex math topics, but you displayed excellent techniques of teaching touched and intertwined with the virtue of patience and tranquility. Then, as that video was reaching its final moments, I discovered that your voice brought me relaxation in a profound way.

    Before I go to sleep, and before I even knew about you, I used to see other ASMR channels, many of which I still see every now and then. But lately, I’m constantly listening to your videos, just listening not watching. I already went through many math courses during college, and I’d like to say that I never really had a lot of trouble with this subject. Sincerely, I hope that you reach all of your goals, and that you find the right human habits that will make you happy every day of your life.

    Now, the real reason of this comment is to invite you, or to perhaps, convince you of considering trying/starting an ASMR channel. You already have 200K+ subscribers, and I’ve read in other of your videos comments from other people that also have enjoyed your voice, expressing that they were delighted with your voice. Obviously, it’s an inherent talent, because you weren’t trying to do ASMR. Why not take advantage of this other talent that you have? I don’t have to tell you about numbers, as you know the subject impressively well, but you could be making passive/main income from an ASMR Youtube Channel.

    The main channels that I visit are ASMR Darling (2.5M+ subscribers) and Gentle Whispering ASMR (1.8M subscribers), maybe you could take a look to get an idea, and even though you haven’t even tried ASMRing, I find myself constantly choosing your soothing videos over theirs. This is just an invitation, and wishful thinking of myself, probably being selfish as well, but I just wanted to let you know all of this.

    Thank your producing these videos, and hopefully, we all get to see and hear more of you. This is the last video that I’ve heard, and now I have to repeat them all, since you’ve been away for a while.

  • Bikash Mohapatra 3 years ago

    Actually you shouldn’t be teaching mathematics.because you are too gorgeous to be a teacher and I can’t focus anything but you in your videos.

  • Garvjeet Dahiya 3 years ago

    Video on Laplace Transform

  • lambo rambo 3 years ago

    Thanks a lot, Nancy you are best

  • Kamadev888 3 years ago

    Nancy, I really like you!
    Hit me up at (mobile phone, or Watssapp number) – Log 2×10 . 1/16^35 x 3√16 𝞹^3

  • Just for Fun 3 years ago

    Although you aren’t good at explaining, you are VERY captivating AND SMART woman, but unfortunaly, as i said, you lack the “thing” that a great teacher have. If you find “that” i will love to learn from you whatever i can.

  • Anonymous Anonymous 3 years ago

    She isn’t lefty ………..


  • Bleedingreen 3 years ago

    I NEED HELP. I’m so stuck with differentiating angles like its sometimes you have to first differentiate what before then the trignometric function then the power then the angle like what is happening. Pls explain it to me

  • Pranamya Pradeep 3 years ago

    At 7:10, perhaps we’re MATHSochists

  • Ahmed.B Hewary 3 years ago

    Lady… Thanks for your help and the video you spread to educate others, I hope you have plans to make videos about Static and Probability theories

  • Froggy Q 3 years ago

    Me to myself: How much you sure you gonna pass the test?
    Also Me: 07:16

  • shiba 3 years ago

    is this mathbff? if so ive watched her for years!

  • Trey 3 years ago

    Oh nooo our hero has left us!

  • Horrible Stories 3 years ago

    Ilove you Nancy

  • Horrible Stories 3 years ago

    You beautiful girl 💑💏

  • Horrible Stories 3 years ago

    Do you want to be boyfriend please thanks 🙏

  • Enjoyment! 3 years ago

    Nancy, what was your math study routine?

  • crossover poem 3 years ago

    I want to make love with you Nancy

  • Kamilla 3 years ago

    Absolutely amazing! Thank you for all you do. God bless

  • Bill Redfields 3 years ago

    Beautiful Nancy Pi !

  • Dan Condor 3 years ago

    can you do a video on rational functions

  • HyperActive Jaime 3 years ago

    The “clean it up part” was what I needed help with 🙁 MyMathLab will not except dirty answers, but thank you for the math help.

  • Hilary King 3 years ago

    Missed you Nancy..

    • Hilary King 3 years ago

      @Rumi’s World hehehe.. I’ll definitely do!

  • isfar ahamed 3 years ago

    i know how u write backwards

  • Robin Svensson 3 years ago

    Will you be doing differential equations?

  • Anthony Contrera 3 years ago

    You just saved my ass on a test THANK YOU

  • T T 3 years ago

    You just disappeared 😠😠😠😭

  • jj3ffries 3 years ago

    “‘Doubts'” if you are British. As having lived in the UK since I was born and being raised in a family of predominantly white British people, I can confirm that this is absoloutely true.

    • jj3ffries 3 years ago

      @Jo Stokell that’s not the argument.

    • Jo Stokell 3 years ago

      @jj3ffries what argument, I’m genuinely confused?

    • jj3ffries 3 years ago

      @Jo Stokell it’s a joke about how British people always seem to teach maths differently.

    • Jo Stokell 3 years ago

      @jj3ffries I dont think it is, she talking about people having questions or “doubts” if british, saying british people say doubts rather than questions. I am british, I’m just intrigued about whether this isnt something common in the rest of the world.

    • jj3ffries 3 years ago

      @Jo Stokell apparently not 😂

  • TheQuantumFreak 3 years ago

    This channel is excellent. I guess you are a busy young lady but you should definitely put out more videos. This has been the greatest way to brush up my calculus.

  • Faiz Alhamadany 3 years ago

    How do I create a video clip like the clip above

  • UNhappy 3 years ago

    Candice owens sent me

  • St. Paul MN 3 years ago

    Nancy, is it possible to take the limit of a question? I understand that the Constitution (US) was done Euclidean style, & I’m tired of these god damn seatbelts. Why tf’ is this law?

  • The Last Commander 3 years ago

    Are you single? 😚

  • Ryan Conway 3 years ago

    You helped me a few times when I was stuck, and reading the problem didn’t work, so I am forever grateful for that!

  • Steven Karanja 3 years ago

    Just discovered you….thank youuuuu

  • Gray Caliora 3 years ago

    Am I the only one noticing this? She’s a way more beautifuler than the first chain rule video🤗. Thank you for helping me on my opcoming demo🙁😁

  • Jasha 3 years ago

    Why does this feel like asmr?

  • Ibrahim Memon 3 years ago

    How to do factorization in chain rule with product rule???

  • Mystic_Bubbuski- 3 years ago

    Hot asf teacher

  • TheBeautyofMath 3 years ago

    I really like your channel setup and how you film your videos. It’s remarkable marketing acumen. Not surprising from a Math Major. I too was curious about the technology you are using to write it as you are, making it appear you are writing backwards. I saw in the Q&A video that you are electing not to reveal it. I know why you elected to use this style/videography setup though. It was very smart really. I don’t think the style would work as well for my content, but it’s perfect for you. Well done. Subscribed.

  • Kr vlog 3 years ago

    I love you

  • Mehedi Hasan 3 years ago

    It is so difficult to pay attention when a crush on screen like a princess.

  • Info Flood 3 years ago

    you are the best maths teacher i have ever seen ☺☺☺

  • Nahshon Daniel 3 years ago

    Should change her name to Nancy-Creampie… Cause DAMN!

  • Shane Keena 3 years ago

    Can you please kick out however many videos are needed, explaining matrices, how to perform the four functions on them, and generally how to deal with them?

  • Kamdalur sumanth8558 3 years ago

    Sister you are so great because you are providing free clases to and more information to public as a good and best teacher (professor) i like your class tooo Hope to upload next class on probability plz😎😍😍😍🙇🏻

  • Hardwell 3 years ago

    I speak Spanish and i understand everything! muchas gracias!

  • jax win 3 years ago

    Does anyboby know another math channel like this one? I love learning maths. Thank you.

  • Rimberse 3 years ago

    I’ve never imagined that in MIT graduate could be SO beautiful and SO intelligent at the same time, how do you do it? Also you explain things well. It’s a pleasure to listen to you.
    Let me explain, I’ve studied engineering and all the girls were not so cute (not ugly, because i would never petmit myself to use that word), because they most of the time never care about their look.

  • Ashley Stewart 3 years ago

    Hi Nancy I love you plz reply to me I wanna birth your kids

  • Truman Hicks 3 years ago

    Nancy, where have u been for the past 5 months!? We need u back!

  • Derick Leal 3 years ago

    nancy I hope you’re doing well, you sound a bit exhausted

  • elar akamai 3 years ago

    Given your evident math education skills, have you considered producing a series on the basic axioms and postulates of Algebra? Or one on the laws of Boolean Algebra?

  • IN THE SHOP 3 years ago

    Where are you at? Professor Leonard is cool but he puts us to sleep sometimes. If you need anything let us know!

  • Saurabh 3 years ago

    Mam, please teach us permutations and combinations.

  • CURRENT LAUNCHER PH 3 years ago

    Im new subscriber. Please upload more math video. Thanks

  • R K 3 years ago

    Very beautiful

  • mrJwlock 3 years ago

    Nancy. Are you coming back?

  • M A 3 years ago

    Hey nancy i know your trick for writing vice versa you are now actually writing opposite and i can make video as same as you

  • M A 3 years ago


  • Con Alamag 3 years ago

    what is the derivative of 2/square root of 3-x

  • Nina McCoy 3 years ago

    I’m so confused in Calculus 1 on Concavity(when ‘f’ is increasing, decreasing, concave down, concave up,etc.). Pleases help!

  • Sir Mansoor 3 years ago

    I like your videos and impressed n try to follow you.

  • Lourens 3 years ago

    Busy to study again after 12 years, was struggling a bit with this thank you.

  • Black Splasher 3 years ago

    I lovey you❤️

  • A M 3 years ago

    anyone else see Log! as log base ten of a factorial? because my heart skipped a beat.

  • sai karthik 3 years ago

    is she alive????

  • Seth Bender 3 years ago

    hella fine

  • Rawhead Rex 3 years ago

    Why did you stop making videos?

  • John B 3 years ago

    Hi Nancy! What(how)do you use for board? It amazing . Please send me brand I can buy. I am Python programmer and want to teach like your style. You are amazing. Please send me email or here

  • Aman Kaur 3 years ago

    Hey! could u show us how to solve the last example where chain rule applies first?

  • Gabriel Russell 3 years ago

    Stumbled across your channel and after 2 videos I figured, “Hey. Why not comment on her most recent video? I’ll say that I just found my new favorite ASMR channel. Might be funny. Maybe she’ll thinks it’s cute.” Then I saw the Q/A video and realized I wouldn’t be nearly the first one to go there. So yeah. That went nowhere in a hurry. In other words, just when I needed an original and flattering comment, it vanished…

  • ناصر جبار خضير 3 years ago

    i like math , you , and your videos

  • Doaa Marzouk 3 years ago

    could I ask you a question , how did you record your videos ?? which application do you use it ?

  • Jolly Jokress 3 years ago

    Could you team up with 3blue1brown? Maybe it’s a good combo. I prefer listening to you but I prefer the visual examples of 3blue1brown 😂

  • Jenna Kurburski 3 years ago

    nancy can you do some videos over matrices and methods like Gauss-Jordan?

  • Ramanjaneyulu mareedu 3 years ago

    Plesase make more videos for us plesase mam

  • free smiles 3 years ago

    i want to learn how u can write on screen like that??

  • Kyle Howat 3 years ago

    Hey Nancy, can we please date?🥰

  • Jonel Polot 3 years ago

    I do believe that you are the voice actress of Aerith from final fantasy 7 and her beauty was based on you too.

  • Ozzy Man Diaz 3 years ago

    do multivariable plz

  • salma housam 3 years ago

    If l have integration with interval [-2,2] ax^3 +bx^2 + c why it depends on the value of c ??

  • Johnny Guerra 3 years ago

    You, Nancy, are pretty and I appreciate learning Mathematics from you.

  • 1A Tech 3 years ago


  • Levy Nyamariwata 3 years ago

    These are so helpful😭

  • Frankhoe 3 years ago

    Nancy, how you do this videos, behind a glass and inverting wright an left?. Thanks. Respectful: you are beatiful.

    • Pepo Ivanov 3 years ago


  • Lucio Gutiérrez 3 years ago

    Have you considered also teaching college math in your channel?

  • Aman Pal 3 years ago


  • Pepo Ivanov 3 years ago

    You are stunning! Could you do a video about rieman’s integrals or integrals with limits? i don’t even know how they are called! Cheers!

  • Chris Whitman 3 years ago

    Hi Nancy! Just wanted to thank you for helping me through my last math class in high school!

  • That Maths Channel 3 years ago

    NancyPi explains Maths in such a clear and concise way. I used her previous channel as both a learner and a teacher and this has inspired me to set up a youtube channel of high school Maths lessons. 32 lessons so far. Perfect for distance learning.

    Any support and feedback would be helpful.

  • Pratheek Kotamarti 3 years ago

    Could you do a video on relative extrema?

  • Tripto Pal 3 years ago

    Chain rule is really awesome,
    I understood this when I saw integration problems

  • Sodium Chloride 3 years ago

    Oh my God…I made a mistake …I found this video one day before my maths exam for a doubt
    ….and happened to subscribe it watch each video again and again…😁

  • Jhonatan Alysson 3 years ago

    @nancyPi how do you use this transparent board to write classes on youtube?

  • RouX 3 years ago

    you deserve more subs for the hard work you put in, keep it up!

  • Hamad Almazrouei 3 years ago

    What is the ‘best’ book for Calculus?

  • Yahea Amer 3 years ago

    I don’t love math but i don’t know why i am watch these videos

  • Maruf Maruf 3 years ago

    Strange, how many day’s after will come the next video.

  • Prisha Aggarwal 3 years ago

    She is the best

  • AppleGamer 3 years ago

    Thankss to her I was able to pass and got a high score thank you so much nancy stay safe we miss uuuu

  • Ayush Arnab Mishra 3 years ago

    mam u teach so good and u r so beautiful that i can study like literally hours when i watch ur videos.keep teaching mam

  • Nicholas Champagne 3 years ago

    Hello Nancy, I feel like I am in college and I have the best Math professor on the planet.
    Your explanation of the equations are soo straight forward, easily understood,
    You need to right a book” math made easy.

  • Sara Ramirez 3 years ago

    Love your outro but also youre helping me get this HW done during this pandemic.
    I appreciate it

  • Suchikant Pattanayak 3 years ago


  • Yatindra Mohan 3 years ago

    According to me (Maths on youtube)=(NancyPi)….. lots of love from india…. only coz of u i am able to understand my engineering mathematics…..thank u mam

  • LittLe boy 3 years ago

    I forgot about mathematics,😅 but I kept looking at your face because you are so beautiful 😝😍

  • John B 3 years ago

    Hi Nancy. Nice video. What kind of glass do you use for video? Normal window glass??

  • Silas Pirschel 3 years ago

    You should take a break from math and become a model 😉

  • Dlshad Sdiq Xoshnaw 3 years ago

    Hi Nancy
    Thanks to explain
    I have one question
    Can you help me ?

  • Kram Nevo 3 years ago

    Hello pls notice me hehe im from Philippines🇵🇭

  • NOLOAF 3 years ago

    do u plan on making more videos? :0

  • Robert Campbell 3 years ago

    I like Nancy Pi. At least, I think I do. Maybe it’s just her great looks. Who knows? I studied 1st sem Cal. w/Anal.Geo. about 15-20 years ago. It was a complicated class but in general no too difficult. My strength was solving word problems. A bit more abstract as you have to create a model that accurately represents the actual problem. Proofs also can require a bit of ingenuity. Differentiation and some of integration are easy if you’re good at following complicated instructions. I struggle with some mental illness due to drugs. As a consequence, I always get the impression that Nancy is using the mathematical principles as metaphors to explain some spiritual concept. If I can get past that I can really enjoy her vids.

  • free smiles 3 years ago

    please tell me how to write on screen like that

  • George Vladimirovich 3 years ago

    Good evening Nancy. Just a very serious question. Would you consider to give some private tutorial on line for my grade 11 daughter. She likes you a lot and feels comfortable with your way of teaching. If willing to do so, I will give you her temporarily e-mail address in order to connect with her from there. Privacy is absolutely essential on the net.

  • Litromenger crif 3 years ago

    Are u lefthanded or is the video inverted?

  • EZY4 ツ LESLIE 3 years ago

    The 6th sum can be done in an simpler way by applying d derivative of √x

  • Mathema Teach 3 years ago

    Does anyone know what happen to Nancy?

  • Whitney Damkor 3 years ago

    This is really helpful thanks nancy ❤️

  • Whitney Damkor 3 years ago

    The chain rule with the product I didn’t understand towards the ending

  • Herramientas Académicas 3 years ago

    Hi, Nancy I like your very much videos, Congratullation !!! I am starting my Chanel in Colombia and I would like to know what is your technique for writing on the screen…Thank you…

  • Ghatak Godfather 3 years ago


  • Campbell Morrison 3 years ago

    I haven’t watched any of your posts in the last year but I have to complement you. Your confidence has improved significantly, you were always easy to watch but you are now more loose in your approach. Love it, exactly what I need to pick up where I left off.

  • Chris 3 years ago


  • Sohail Javed abbasi 3 years ago

    I hope her husband will be a perfect mathematician..

  • ElliottMath 3 years ago

    I’ve been making a lot of math instructional videos lately.. unfortunately not nearly as professional looking at these! Great job

  • GARTH REID 3 years ago

    For the very last question with the ln and the product as the argument, you could also use laws of logarithms to expand and simplify and then differentiate each term which makes it much simpler

  • Madalitso Kasongo 3 years ago

    I just love how you explain everything, it’s very helpful… Thank you very much Nancy ❤️

  • CANLARIM İÇİN 3 years ago

    Hello my name is Joseph. I am a math teacher. I give my students distance learning because of corona. I want to ask you a question. how do you write on the screen I like you, you are making beautiful videos

  • Everything Maths 3 years ago

    Hey I love all your videos, I just started my own math channel doing walk through of questions. I’m finding it so different to teaching people in person!

  • MaskedAssailant_ 3 years ago

    Teachers to hot. Couldn’t learn anything

  • Leah Elisabeth 3 years ago

    this helped me get my best math grade in years thank you

  • Shaun T 3 years ago

    Thanks for the all calculus videos. They really made a big difference for me. Passed cal 1 and finished my associate’s degree.

  • Atharva Purohit 3 years ago

    the pace is absolutely perfecto

  • Pahanin 3 years ago

    Nancy calms my anxiety

  • Saqulian Yusuf 3 years ago

    love from India 😘😘😘
    hi iii my my favrt

  • Toprak Soil 3 years ago

    y=e3x expontial how can calculated

  • Sunita Ukirde 3 years ago

    Mam ,you are competition between beauty and talent both. It’s hard to define ,your any one as superior feature.
    Very perfect🤝🙏👩‍🏫👩‍🏫
    Love you mam

  • jas math 3 years ago

    hello kids..

  • Adan Castro 3 years ago

    I declare myself infatuated… also with Calculus 😜

  • Johnson Bāg 3 years ago

    Shampoo & hair oil brands should sponsor her videos .
    She is intelligent, softspoken & beautiful also.

  • Gianne Badilla 3 years ago

    Hi, can you please give more explanation on how you simplified the 4th example? I would really appreciate it and it would be a great help since I’m studying this on my own

  • Ephraim Spencer 3 years ago

    Pleas what happened to the powers @ 10:29

  • Ephraim Spencer 3 years ago

    What happened to 8x?

    • Ephraim Spencer 3 years ago

      sorry, i got 8X factorization but the powers, i dont know.

  • lambuoli oli 3 years ago

    Ur fan frm TN

  • OM PRAKASH 3 years ago

    Bad video india teacher is best

  • DRKX 3 years ago


  • Bobby Poly 3 years ago

    Thank you so much!! You can’t imagine how much you are helping the students of the world!! 🤗

  • CCL 3 years ago

    where did the exponent “4” went when simplifying from the 2nd y’ to the 3rd y’? 10:40 Great video!

    • Katherine Lewis 3 years ago

      I was thinking the same thing

  • amirah saiful adli 3 years ago

    Nancy, I have a question.. how to solve y=(4x²-5)(6x+1)⁵… chain rule

  • Aafrin Aafrin 3 years ago

    Very helpful

  • Faith Van Wart 3 years ago

    so happy you showed us how to simplify like that because my brain couldn’t compute what my professor, textbook & my “derivative calculator” were doing to get the tidy answer. I’ve wasted 5 hours trying to figure it out. Lol. Thank you!

  • Ashish Upadhyay 3 years ago

    Calculus is such a beautiful subject.

  • Alexandre Simard 3 years ago

    Me exam is tommorow, I’ve done derivative all week-end. Wanted to see if Nancy could bring some new tricks. Nothing new but great revision overall, love her vids!

Comments are closed.