Power Rule… How? (NancyPi)

Published on December 12, 2018 by

MIT grad shows how to find the derivative using the Power Rule, one of the derivative rules in calculus. It is a shortcut for taking derivatives of polynomial functions with powers of x. To skip ahead: 1) For HOW and WHEN to use the power rule, skip to time 0:22. 2) For how to use the power rule when you have a FRACTIONAL or NEGATIVE POWER, skip to 5:22. For my video on the other differentiation rules, PRODUCT RULE and QUOTIENT RULE, skip to https://youtu.be/QqF3i1pnyzU?t=456 Nancy formerly of mathbff explains the steps:

For how to differentiate using the formal LIMIT DEFINITION of the derivative instead, jump to https://youtu.be/-ktrtzYVk_I?t=628

Support Nancy on Patreon: https://www.patreon.com/nancypi
Follow Nancy on Instagram: https://instagram.com/nancypi
Follow Nancy on Twitter: https://twitter.com/nancypi

HOW and WHEN to use the POWER RULE: If the given equation is a polynomial, or just a power of x, then you can use the Power Rule. For a term that's just a power of x, such as x^4, you can get the derivative by bringing down the power to the front of the term as a coefficient and decreasing the x power by 1. For example, for x^4, the derivative is 4x^3. If you have many terms added or subtracted together, and if they are powers of x, you can use the Power Rule on each term (by the Sum and Difference Rules).

NOTE: The derivative of a constant, just a number, is always 0 (that is the Constant Rule). Also, if you have a term that is a constant multiplied in the front of the term, like 2x^3, you can keep the constant and differentiate the rest of the term (Constant Multiple Rule). In this example, you keep the 2 and take the derivative of x^3, which is 3x^2, so the derivative of the term 2x^3 is 2*3x^2, or 6x^2.

ANOTHER NOTE: You can use the same power rule method for fractional or negative powers, but be careful... for negative powers, it works as long as x is not 0, and for fractional/rational powers, if the power is less than 1, your derivative won't be defined at x = 0.

The derivative is a function that gives you the instantaneous rate of change at each point of another function. You can calculate the derivative with the definition of the derivative (using the limit, see https://youtu.be/-ktrtzYVk_I?t=628), but the fastest way to find the derivative is with shortcuts such as the Power Rule, Product Rule, and Quotient Rule.

For my video on the CHAIN RULE for finding derivatives, jump to https://youtu.be/H-ybCx8gt-8

For more math help and videos, check out: http://nancypi.com

Editor: Miriam Nielsen of zentouro

Director: Kristopher Knight

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  • SillyRomy 69 4 years ago

    hOw iS ShE wRiTiNg bAcKwArDs

    • Yy Chan 4 years ago

      i think it is supernatural powers

    • BIG TEX 4 years ago

      She graduated from MIT…she can do anything man….haha…..OR….you can just turn your monitor 180 degrees and it’s no longer backwards….see how smart I am….oops not too smart…now I can’t see beautiful Nancy Pi…haha

    • J Will 4 years ago

      @MisterGreenGuy Guessing she’s right-handed as well.

    • Kir Kanos 4 years ago

      Because science…

    • Coltyn Stone-Lamontagne 3 years ago

      See, he had evil parents who though they were funny and only taught her to write backwards! Now she is incapable of writing forwards and this is her only career option!

  • Noob Noob 4 years ago

    MIT copied your technique.

  • Farthuse Akhter 4 years ago

    plzzz make a video of finding domain and range on a graph and with the brackets/ parentheses

    • SuperAwesomeCaptain McFluffyPants 4 years ago

      Farthuse Akhter she already made the video on how to find the range and domain for function f(x).

  • CrazyAlaskanCoDShot 4 years ago

    Good vid as always Miss Nancy 😊

  • Aaron Perez 4 years ago

    Wow she is sexy and intelligent.

    • Robert Bualle 3 years ago

      Aaron Perez I had you at sexy

    • Benson Xu 3 years ago

      Ok Boomer

  • Lance Dance 4 years ago

    I’m learning about derivatives right now , this video was quite helpful

  • OrphanPaper 4 years ago

    its hard to be you self to a non biological entity ,like a camera, relax your literally like 1000% cute ,,,love the hair

  • xueq 4 years ago

    I don’t even need to know math and I’m not in school or anything but I still come to these vids

    • Al Chanel 4 years ago

      Xueq same!

    • Im Legit 4 years ago

      Xueq tf how old r u

    • xueq 4 years ago

      @Im Legit 22

  • crashonthehumble 4 years ago

    Thanks are you going to put all your lectures on DVD for purchase?

    • Ernesto Caudillo 4 years ago

      Say something stupid like that again watch your ass be in depth ,she helps from her Heart

  • davetileguy 4 years ago

    What’s a derivative?

  • AC 4 years ago

    Where were you in the beginning of the semester 😭😭😭

  • Manuel Gopan 4 years ago

    One word , clusterfuck .

  • DARIEN Ford 4 years ago

    Dangit I took my finals before this video uploaded

  • David 4 years ago

    Just in time for my calculus final tomorrow!😍 I love you!

    • Carlos Rosales 4 years ago

      David if you don’t know the power rule by the time your calc final rolls around you’re really in trouble

    • Egg 4 years ago

      So, how did it go?

    • Tarzan 3 years ago

      @David you’ve failed.

  • Matelok 4 years ago

    Hello Nancy;
    I’m Prof. Cris from the Matelok Channel. A pleasure to always watch your videos .. I really like your style of making the videos .. Do you use a glass or something like that? …

  • Daniel Liu 4 years ago


    • Benson Xu 3 years ago

      I’m totally not involved in this

  • Lex Luthor 4 years ago

    Nancy video! I’ll still watch even tho my exams finished yesterday haha

  • NiHaoMike 4 years ago

    The power rule also works on constants! Think of a constant as being multiplied by the zeroth power of x, so that on taking the derivative, the zero is pulled down and the whole term disappears. (Not that there’s a reason to use it but it’s always good to see mathematical rules staying consistent.)

    • Bibek Shah 4 years ago

      You are right

    • Blox117 4 years ago

      constant lives dont matter!

  • AMotoVlogger 4 years ago

    Well done, Nancy. Keep up the great work. Proud of you

  • Ernesto Caudillo 4 years ago

    Will you marry me 🍸💎💍

  • Jace Turner 4 years ago

    Collab with Hannah Fry?

  • Lord Carl 4 years ago

    How to do the “Summation of” thing… You know, the giant “E” thing?

    Crap, she probably won’t see this.

  • Jake Rodgers 4 years ago

    NANCYYYY!! You are a damn goddess.

  • Mr. Moreno 4 years ago

    The world should be saying “subscribed to NancyPi”
    I don’t care about the other pies on YouTube. And I don’t even math anymore but I still watch your films… I should have said videos.

  • axel dego 4 years ago

    How write sooo

  • Abdullah Al Jeffrey 4 years ago

    Can you help me with the fundamental theorem of algebra and complex zeros I have final exam 😭😰

  • Aamir 4 years ago

    They Said Maths is Beautiful, Man they Really Meant it 🙂
    Nancy The Math Saviour

  • Javier Silva 4 years ago

    At the beginning of the video, you can see the updated look of her today. Look really good!
    Nancy, thanks for your teaching!.

  • Jack Spiral 4 years ago

    Can you help find the range

  • Ahmed Mzhr 4 years ago

    Nice 😊

  • Amit Majoka 4 years ago

    I ❤ you Nancy

  • Coalition of Rob 4 years ago

    Ok, guy who has not done this maths for … a while shall we say. What the heck is a derivative? And why is that useful?

    • markgriz 4 years ago

      You should start here

  • Matthew Stephens 4 years ago

    Please more derivative videos! Thanks :))

  • Roman Ovechko 4 years ago

    She is so cute)

  • Chaminda Silva 4 years ago

    Angel Nancy,
    Thanks for teaching me Power Rule.
    Please make videos for the following topics:
    How to find Maxima,minima and points of inflexion by using Differentiation.

  • SUBAIEE 4 years ago

    if u were my math teacher 100/100 in exam is 100% guaranteed

  • Tim Pullen 4 years ago

    Nancy, I managed to do that in my head in about 2 seconds. But listening to you talk it through took my mind of off Brexit for a few minutes. All the best from England, and Merry Christmas.

  • Doubleo497 4 years ago

    Just helped me pass calculus the other day! (That U-Substitution video saved me xD) Thanks Nancy!

  • Margret Zinyongo 4 years ago

    thank u

  • Mike Earls 4 years ago

    guys – she is not writing backwards….just want to put that out there.

  • Santiago Bron 4 years ago

    Can you do partial fractions integration?

  • Bucket fire 4 years ago

    Can you make a video on linear programming

  • Erick Chavez 4 years ago

    Calculus is 2 quarters away but hey this shit’s interesting and she makes it sound easy

  • Al Chanel 4 years ago

    I really don’t need this lesson I’m not in school but I still watch because of you <3

  • Abdulmajeed Garoot 4 years ago

    I graduated and I still watch your videos

  • Dale Kriens 4 years ago

    your awesome. just saying ;]

  • Ruchi 4 years ago

    Works like Magic ✨🎩✨

  • Pa Reh 4 years ago

    Your beauty is pi, it never ends

    • Doom Master 4 years ago

      Your comment is irrational.

  • Nick Rocker 4 years ago


  • NI Archive 4 years ago

    NancePi can you tell me how you got/built your “lightboard”? I am in the process of this at my university. Any help would be great. PS – your videos are very helpful.
    Also my email is bill.arbuckle@oc.edu

  • Saad Alshemrani 4 years ago


  • Saad N 4 years ago

    so well explained. made life a lot easier! thanks!

  • Jean Carlos Ortiz 4 years ago

    It’s good to have you back Nancy

  • Matt Harvey 4 years ago

    I have a suggestion. You should do a quick review to make sure we’re all on the same page. In fact you should do it with my problem set which i need to finish by Thursday. I’m only half kidding strange beautiful internet math lady.

  • Nikhil jadhav 4 years ago

    You are so beautiful and I love to learn maths from you …

  • AMUSER TV 4 years ago

    Thats my babyy

  • Rafał Burdzy 4 years ago

    Merry Christmas 🎄🎄Nancy. Thank you for great creative math lesson.

  • Maya L 4 years ago

    She’s so sexy

  • Steve Swan 4 years ago

    Hi Nancy I hate to blow your trick but I believe you are not writing backwards 🤔you are flipping the video horizontal 😬 ps I have a total mind blank with math it may be a form of dyslexia as it has been the hinderance to my career all my life 🙁 your channel is just very soothing to the ears and eyes 😳😂

  • Mark 4 years ago

    yo nancy

  • dik2bik 4 years ago

    Does anyone else spend 95% of the video staring at Nancy?

    • RailFanning & Stuff 3 years ago

      she looks like fran from star gate Atlantis

    • Project SynTekky 3 years ago

      who doesnt

    • Twobarpsi 3 years ago


    • G 3 years ago


    • matar mbe 3 years ago

      sometimes she smiles as if she was explaining naughty things, init?

  • Qdm 4 years ago

    i love pasta

  • Mist R 4 years ago

    Hey Nancy, it would be great if you could do more calculus for the near future. You saved me from Algebra last semester and I’m gonna be taking Calculus next. Just a suggestion if you’re not sure what to do 🙂 Love your vids! High quality all in all

    • corp edu & hs math sci teacher 4 years ago


    • Peter Wiebe 3 years ago

      Great job on your videos nancy thank,s

  • Davin Yap 4 years ago

    Do you do differential equation? that stuff is hard to swallow

  • Mr. Thanos 4 years ago

    You seriously taught me what my teacher didn’t, not only that but your very pleasing for the eyes

  • cmaan4life1 4 years ago

    I just wanted to take the time to say thank you because you helped me soooooooooooo much throughout the years!! I just took my last college lvl math class at UMD and I passed with a 92% thanks for uploading these videos to youtube when you don’t have to. It really helps alot of us out who may not have the best of teachers or the learning environment for math at some colleges just isn’t personal enough.Anyways you helped me more than you can imagine, so thanks again.

  • Ibis B 4 years ago

    Hi Nancy, can you please do a video on ln and e? Thanks

    • It's a nice day, isn’t it? 4 years ago

      she does ln in her logarithm video and 3blue1brown has a great video on where e comes from to tide you over until nancy does one of her own.

  • Decaf-Math ASMR 4 years ago

    The ending is the cutest thing ever! hahaaa nice job

    • KashMuMu 3 years ago

      Decaf-Math ASMR bro it’s math, what’s cute about it😐

  • Medo Hamdani 4 years ago

    Tap tap like

  • Sam Hambleton 4 years ago


  • Dany Sanchez 4 years ago

    please do related rates… its urgent lol

  • humza hussain 4 years ago

    your videos help a lot thank you.

  • fatih üstüntürk 4 years ago

    Finally I fell in love. Marry me

  • Brain Gainz 4 years ago

    So envious of your editing skills 💯

  • ammar mohamed 4 years ago

    Thank you very much…I understand you …I am a techer of math …I think you are the princess of girl who teach math …can I now you e mail please…

  • Harmon Heat 4 years ago

    I found this channel by looking at a YouTube profile of a guy who claims to be an alien. I don’t understand any of this but holy cow your a beaut!! ( sorry I’m sure you hear that too much). Just passing through c ya!

  • b100ka 4 years ago

    happy new year nancy

  • It's a nice day, isn’t it? 4 years ago

    Hey @NancyPi, You’ve mentioned that you were also highly interested in computer science in high school, right? Did that continue into college? I recently watched lectures from MIT on general computer science (using python). It was extremely helpful and the internet is blessed to be able to have access to such high quality and free educational materials.

    In future videos could you expand upon the material already provided by MIT? More intermediate and advance topics of computer science… and since you’re a self proclaimed math nerd, you could focus on algorithms and how they work (instead of how to implement them). You could do a video on gradient descent as an example or any of the many sorting methods and the maths behind them.

    Another suggestion would to be to take a page from the youtube channel “Socratica” and provide short clips on studying techniques, job/internship hunting/interview techniques, and anything else that helped you get through MIT’s rigorous curricula. This would help increase your upload frequency, while not taking up too much of your time that is normally spent on your longer videos.

  • Hemant Kirola 4 years ago

    Nancy I fell on love with you

  • SoLiD CyPhEr 4 years ago

    You like that huh

  • jwo7777777 4 years ago

    Nancy, I do not know how many people who watch you realize that you are teaching extemporaneously and to an extremely wide audience. This shows your grasp of the subject matter and your grasp of how to speak to people about complex subjects without talking down to them and without talking over them. It is obvious to me that you are a disciplined person who cares about others. A rare and desirable set of character traits.

  • Muhammad Tayyab 4 years ago

    Please explain compound function, composite function, inverse function and one-to-one function in the next video. Thanks

  • Sabir Hodzic 4 years ago

    How is it possible that some book has mathematically balanced letters on all 604 pages?
    This book is called the Qur’an and I believe it is the only book in the world of this kind…
    And how can this really happen in a book that is believed to be revealed by God, how can this be a coincidence?
    It should be interesting for every mathematician…

  • Jorg Hildebrandt 4 years ago

    I like watching your math tutorials you are a good tutor. Your explanation is very clear and easy to listen to. And I think you have a little giggle in your voice when you throw in a new concept which makes me giggly too.

  • Joseph Gilligan 4 years ago

    why am I watching videos about things I don’t need to learn

  • Cr remedies 4 years ago

    Can you do a video on the law of sin and cos

  • keyboard freedomfighter 4 years ago

    the reason ,guys, that you don’t see a ring on it yet is because…..I’m going through some financial issues atm.

    (edit) I “forgot” that she was a MIT graduate and decided I’ll just stay broke for awhile.

  • dppage 4 years ago

    Thank you so much for posting these! They’re so helpful!

  • Gabriel Redd 4 years ago

    thanx Nancy!!

  • Saliba T 4 years ago

    I passed college because of you. I owe you thousands.

  • Nacho Libre 4 years ago

    She slays me with her beauty

  • Adelin Bonheur 4 years ago

    You’re so pretty. You’ve transformed me in Math

  • Alexander D 4 years ago

    Jesus Christ, you thirsty ass dudes on here are pathetic. Thanks for the sharing these shortcuts NancyPi. Great help!

  • Abdul Rehman 4 years ago

    nice work dear

  • zain alezzy 4 years ago

    Hi Nancy, Can you make a video explaining the rules of mathematics? For example, the coefficient of the unknown should not be negative or say the denominator if it is not relative

  • Kisembo Academy 4 years ago

    The power rule. Wow, been planning calculus videos on my own channel. I hope one day I’m able to adopt your production quality, it’s soo next level. Your channel is such an inspiration. Great work you’re doing here….. Keep it up Nancy

  • Damian Rivas 4 years ago

    I just discovered your channel and I love your content and teaching style! Do you have plans to make videos on Series?

  • Edgar Luna 4 years ago

    matrices next, please !!

  • Shadow_Walker _99 4 years ago

    It would be really helpful.
    Lastly…your are very hard-working and dexterous.✌🏻

  • Aramis Stavridis 4 years ago

    You should hit up Michel van biezen you guys would make a great couple

  • Prabhash Jena 4 years ago

    I really want to say u r hot n sizzling

  • GBSboy 4 years ago

    updated videos! And you’re much more relaxed now. high five!
    I need to use calc again and couldn’t find the mathBFF channel, I’m glad you’re still here. high five again!

  • romio lover 4 years ago

    who said that beauty and science do not mix !!??

  • Dhia Light 4 years ago

    Sorry cute girl you’re late I’m already an engineer 😢😢

  • Yah Leider 4 years ago

    Nanci can you do series, sequences and approximations video, pleade

  • Valken 4 years ago

    More videos, please!

  • Rick Bustamante 4 years ago

    At the risk of appearing really stupid, can you really write backward so proficiently?

  • le scientifique 4 years ago

    I just found your chain
    interesting video
    you are beautiful

  • Minju Lee 4 years ago

    Hi Nancy, would you please make a video about Differential Equations? Please save my life for this semester……

  • Waseem Haider 4 years ago

    Mam, you’re amazing. Thank you so much for such effort for us. #Pakistan

  • Oto Bibi 4 years ago

    Nancy please teach us how to graph sin and cos

  • First Next 4 years ago


  • Sthitapragnya Deshpande 4 years ago

    Thank you so much for explaining these concepts in such a simple and fun manner.
    can you PLEASE make a set of videos on statistics and probability? The topic is simply killing me and I sure could use some help.
    By the way, I like how all the formulae appears right next to you on the screen 🙂

  • Brady Pfeiffer 4 years ago

    how can you write backwards so well

  • Fishing Infinite 4 years ago

    wanna get married

  • Erick Vazquez 4 years ago

    Could you please teach Fourier Transform or convolution? it would be awesome love ya

  • kool pool 4 years ago

    could i just ask, are you writing backwards on glass or something? the ffff

  • Bicycle Ninja 4 years ago

    I like math, but I don’t like NancyPi. (Happy belated opposite day!)

  • Niyoshan Balasubramaniam 4 years ago

    can u teach vectors for a level cie

  • James Dunlop 4 years ago

    thankyou thankyou thankyou!

  • Carlos Castillo 4 years ago

    +NancyPi Hey Nancy just wanted to ask will ever be doing a video of quadratic inequalities/linear quadratics soon?

  • Irving Castillo 4 years ago

    Hi Nancy thank you for your wisdom and for your cool teaching application, I was wondering do you have any videos about piecewise function and graphing, I loved to see you explain this thanks

  • Darwin Vinci 4 years ago

    No matter what you teach, your class attendance would be 170.7%

  • cohemo077 4 years ago

    How the fuck does this girl write like this. From her perspective is she writing backwards?

  • Mr. Moreno 4 years ago

    Can you do videos on stats covering probabilities

  • Science Revolution 4 years ago

    Universal Repulsion – a new fundamental force.

    Similar to universal gravitation force between matters, there is an universal repulsion force between line of sight electrons on the surface of matters. Without gravitation, we cannot orbit the Sun. Without repulsion, Sun light cannot reach us.

    Because electrons are on the surface of all matters, and because line of sight electrons are constantly repelling each other with Coulomb’s force F=Ke x ee/R^2, therefore between the surfaces of matter A and matter B there exists an universal repulsion force F=Ke x aebe/R^2. In the equation, a is the number of line of sight electrons on the surface of mater A, b is the number of line of sight electrons on the surface of matter B, R is the average distance.

    This universal repulsion force is always existing at any distance, therefore line of sight electrons are constantly connected by this force at any distance,  therefore they can share their kinetic energy instantaneously at any distance.

    This universal repulsion force is the conductor of light energy in the vacuum space between stars and planets. Light energy is instantly shared between line of sight vibrating electrons on the surface of the Sun and electrons on Earth outer atmosphere, then it becomes light wave and traveling in the air at light speed C.

    This universal repulsion force is the conductor of light between things you see and your eyes. Due to air in between, light speed is C.

    This universal repulsion force is the conductor of EM wave between antenna and receiver. Due to air in between, EM wave speed is C.

    Due to the existence of universal repulsion force, all star lights reach Earth outer atmosphere instantly, become light wave traveling in the air at speed C.

    Sun light takes 8 minutes to reach us is mistaken. Time delay in space communication is impossible.

    If light speed in vacuum space is infinite, relativity, electromagnetism and quantum physics will be all wrong.

    Use MIT trillion frame per second camera to measure light speed inside of a vacuum glass bottle, we can prove light speed in vacuum is infinite.

    Light only exists in air, water, medium/matter. There is no light in vacuum space.

    Energy instantly teleported from the Sun to Earth outer atmosphere. Due to the existence of universal repulsion force between electrons on the sun and our outer atmosphere.

    Einstein and Newton thought light is something traveling through space at light speed. It has both wave and particle properties.

    They were both wrong.

  • It's Glenjamin 4 years ago

    Make more calculus videos plz

  • cjeelde 4 years ago

    I found a video from your channel thanks to recommended videos cuz I’ve watched many math/science videos – and wow, I love you and your videos! You explain everything so good, you write so good, and love those ‘speed-ups” and how it’s filmed/recorded. Wish I had your videos to watch when I had math in school, but as it is now – your videos are perfect to refresh the memory and I actually also learn some new stuff. You’re an amazing math teacher! BIG love to you ❤️❤️❤️❤️

  • SCSG18 4 years ago

    A good role model for women. Thanks for the informative vids.

  • guapanese 4 years ago

    Love you, Nancy. Really helped!

  • Manuel Gopan 4 years ago

    Nancy you dont even need the cheat sheet front to back .

  • Mc Lovin’ 4 years ago

    If this was my high school teacher… fuhhh💀

  • Coltyn Stone-Lamontagne 4 years ago

    Thanks for this! You teach so much better than my professors!

  • Mark K 4 years ago

    My new math teacher .

  • Anshuman roy 4 years ago

    u brought my interest back in math ..so please teach us engineering mathematics too…we r eager to watch ur video

  • Beard Squared 4 years ago

    I love NancyPi, I used to watch your previous channel. You’ve inspired me to start a YouTube channel to help my students learn maths, and for anyone else interested. Check it out. “Power rules” 😻👍

  • Glory Compass 4 years ago

    Plz make a video about Complex numbers I have an Exam about it next month

  • Ciara lese Karanikas 4 years ago

    Please do piecewise functions equal and not equal to 0!!!

  • Ralf Reiner 4 years ago

    How’s life?

  • Angel Salazar 4 years ago

    Why did you stop uploading? :/

  • Akash Kumar 4 years ago

    my qus what is all natural numbers sum (1+2+3+4+……………..)

  • Truman Hicks 4 years ago

    could you do a vid on Consecutive integers?

  • dewshbag16 4 years ago

    Hi Nancy, I’ve really enjoyed your content over the years and they’ve helped me tremendously thank you. I’m trying to refresh my memory since I’m about to start my final college math course. Do you know of any websites or books that I can use to practice each math lesson after I watch your video? Any help would be greatly appreciated.

  • Lucas Crown 4 years ago

    Do exponential graphing and inequalities or finding the maxama and minima within a domain .

  • Alfred Clement 4 years ago

    I’m not sure if people come here to learn maths or to see Nancy…

  • Ali Raza 4 years ago

    Kindly make a video on maxima and minima of function of two variable please solve this example

  • Allmond with the Sauce 4 years ago

    I must know how you animated the numbers on the board!!!

  • Steve R 4 years ago

    Leonardo da Vinci is proud of you.

  • Private Factory 4 years ago

    Hi, please do a video on matrices

  • Tanner Barcelos 4 years ago

    Doing these are actually fun lol. Math is a lot more fun, and intuitive, when you just take a step back and really try to understand it. Luckily, Nancy I here to save me in class and everyone!

  • Dragon Master4Ever 4 years ago

    This comment section is filled with thirst tweets and hilarious puns but. Nothing to do with math – I love it :p

  • Sahil Sea 4 years ago

    She is so cute and thats why i am here mostly….

  • İzmir li 4 years ago

    Absolutely I am in love. Marry Me 😍

  • MR 254 4 years ago

    thanks for sharing

  • Reymart Gabayan Oliverio 4 years ago

    Its so helpful 😊

  • Enno Taleb 4 years ago

    I love your videos! Thank you! 😁

  • ZH Z 4 years ago

    Chinese viewer has entered chat

  • Greesha 4 years ago

    Nancy you are such an inspiration! You inspired me to start off my own channel. Great job! Keep it up x

  • Ryan 4 years ago

    Hi Nancy! Thank you so much for all of your videos — you explain everything so well! Can you make videos on sequences and series? I really struggle with partial sums and pretty much all of the tests to determine convergence etc.. I feel like sequences and series are a tough topic across the board, so a series (ha) of videos on this topic would probably be helpful to a lot of us.

  • Calogero GIGANTE 4 years ago

    Hello Nancy. I have a big question : how is it possible to write in reverse like you’re doing in all your videos ?
    I mean : you seem to be sited behind a glass and write letters and characters in inverted ? Or maybe there is a trick ?
    Can you explain us how you realise this kind of video ? I’m beginning teaching to youtube too, and this way of presenting is very very cool !

  • Lucas Crown 4 years ago

    Thanks Nancy! Helped a lot, currently my grade 9 math teacher is so bad at teaching me limits and derivates

  • Agil Asadi 4 years ago

    This is why girls pass maths and boys fail because teachers are always male. My education would have been a lot smoother with a teacher like you.

    • saucy 4 years ago

      No, that’s not why.

  • Anaa Shukla 4 years ago

    Love you ma’am thank you so much 🙏❤

  • Lukas Kazda 4 years ago

    a beauty doing math? so..when do we marry? i already know the date 🙂

  • Te Rukuvau 4 years ago

    very good tutorial but i have 1 question………………how do you write backwards like that???

  • Lara Perez 4 years ago

    Nancy! Can you please do a video covering Graphing Exponential Functions? Growth and Decay on a graph

  • Sasha smith 4 years ago

    you thirsty men under here are so creepy and crowd a space meant to seek help with useless pining. she doesn’t get paid enough to put up with your sh!t…..
    I’m trying to learn *MOVE*

  • Yiwen Xu 4 years ago

    I am curious about how she wrote. It seems that there is a transparent glass whiteboard, on which she wrote, between the camera and her. However, if she stood on the other side of the glass whiteboard, then everything that she wrote would be reversed/mirror, which is very difficult for the writer. Did she really do that? But if she wrote normally, how to make the formulas mirror back in the video? After all, you can see that the formulas covered her left hand, which means she should be in the back.

    Any ideas?

  • Fiza Zaman 4 years ago

    You’re the best maths teacher I’ve ever had…and I’ve studied fully at both a private and a grammar school. Keep it up! I recommend you to everyone 🙂

  • CIO Whitepapers 4 years ago

    Used to hate boring generic looking math teachers. Now I understand their value.

  • Danial rad 4 years ago

    Wow you’re amazing
    Can you make a series of video about matrix 0 to 100?
    Thanks a lot

  • Gustavo Achata 4 years ago

    Excellent video!!! Thank you very much! for all the videos. Saludos cordiales.

  • MorselOfBread 4 years ago

    You’re an excellent teacher!! Hope you would write a book(s) with video solutions to accompany the examples. It’s not easy, I know, but just a suggestion.

  • Sulaiman Ahmed Z 4 years ago

    Hi Nancy you are a saviour thanks a lot for your integral videos…💗

  • David Christian 4 years ago

    Do you write inverted or inverted all video on software? Pls answer, bc it is killing me.

  • Shibli Ziadeh 4 years ago

    Yes it did help a lot. Thank you.

  • S Ar 4 years ago

    If you didn’t do it already, plzzzzzzzzzzzzz do complex numbers plzzzzzzzzzzzz

  • John Burgdorf 4 years ago

    NO WEDDING RING?? so ur tellin me there’s a chance…… 🙏

    • Qusaybah shah 4 years ago

      John Burgdorf lol

    • Robert Bualle 3 years ago


  • ToNe LoCc 4 years ago

    I am an engineering major in college and you teaching has helped me alot in my journey but GOD DAMN!!! You got to be one of the most beautiful woman i have ever seen.

  • blkferrari355 4 years ago

    Nancy, yes I want to push that. You do a great job at teaching math!!!

  • iTsM73 4 years ago

    Its summer vacation and I’m still watching

  • Hashmatullah Sadat 4 years ago

    Can you solve the standard questions, from algebra , limit, integral

  • Dev Mishra 4 years ago

    Actually this is mirror effect. Actually she is not writing right to left but this is the mirror effect. She is actually sitting left of her and right of us

  • Michael Anthony 4 years ago

    Writing backwards is the impressive part.

  • Sam Pitts 4 years ago

    And they said your just another math teacher.l don’t think so.😎 Stay real.

  • SHAZIA ISHAQ 3 years ago

    why the power becomes less 1 degree from the given power? please give me reason practically

  • Luis Fernando Tarazona Herrera 3 years ago

    Question: the constant “C” has rules ???

  • Sean Hanley 3 years ago

    Beautiful😍 math!

  • Robert Bualle 3 years ago

    Keep it up! Your the reason why I am smartest in elementary school! Edit! Videos are very well done 👍

  • AGirlHas NoName 3 years ago

    Tip*** To minus one from a fraction, just keep the denominator on the bottom and for the top subtract the denominator from the numerator. Example 4/3-1 = 1/3

  • Daniel Njuguna 3 years ago

    You are not only intelligent but BEAUTIFUL also….keep it up

  • zecoya 3 years ago


  • David Ivey 3 years ago

    Who down votes her videos? Probably fat girls.

  • Medical Art 3 years ago

    Nice video Wonder Woman

  • Andrew Arroyo 3 years ago

    OG ASMR calc

  • Maaifoedie De La Rey 3 years ago

    Could you do a video on span, as in vector algebra ? ‘Cause of my short attention span when I watch your videos ….

  • Kaihii Aleshiikho 3 years ago

    Miss please come to India i will marry you

  • Twobarpsi 3 years ago

    How do you write so good backwards!? 🤯🤯🤯

  • Amy Renee 3 years ago

    You are God’s gift to Calculus!! Thank you 🙂

  • Chris Thompson 3 years ago

    Thank goodness for this video! I slogged through two hours of the original method for a 60%, but this makes it easy, and I never thought id say this, fun!

  • Ashish Ak47 3 years ago

    So beautiful😍💓 maam, 😊😊

  • isaiah heinze 3 years ago

    i think im in love with you

  • Meu Reforço de Matemática com Prof. Jardel Wylamy 3 years ago

    Adorei o canal. Muito bom❤️

  • Hrithikz Gaming 3 years ago

    hii nancy mam ….where are you from???

  • modern croissant 3 years ago

    im in 6th grade and i have to take advanced classes 🙁

  • David Fernandes 3 years ago

    achei seu quadro bacana!

  • Rao Arif 3 years ago

    nice mam

  • Ellie Cat 3 years ago


  • KATIKI SAILAJA 3 years ago

    Best explanation dear teacher lots of love from india😍😍😘😘😘
    I wish i have a chance to meet u

  • Frank V. 3 years ago

    Had she been my math teacher, I convinced I would have paid much closer attention in class.

Comments are closed.