Deriving a Rule for Differentiating Powers of x

[Nole]

the "yay" at the end summarises what i think.

[ADstaycool]

When you make someone go “yay” in your math class... that’s how you know you’ve been explaining math, not just teaching/showing.

[nexusclarum]

I never really understood the dy/dx notation until I watched your videos. I did calc 1 and calc 2 years ago and was always told just to memorize it. I'd say "no, i want to know why" but they'd literally refuse to explain it to me. I mean I did "well". I was able to pass tests and what not. I was an 'A' student without understanding anything to be honest. This is one of the reasons why I say unless you're lucky enough to have a good teacher the education system can destroy your desire to learn. I like how you take the time to point out how one means the secant and the other the tangent etc.

[davidh]

20+ years after I took Calculus in high school, I still remember this rule for derivatives. I just didn't remember why it was the rule. The fact that it only took you 8 minutes to explain it in a way that someone who hasn't taken a math class in almost 20 years can understand it is impressive. I want to say that I wish I had you as my Calc. teacher, but the truth is, mine was also pretty awesome.

[MjSman]

the epiphany you just gave me was intense. Thank you maths wizard

[najaziz]

You’re brilliant teacher Mr. Woo ! I did calculus 40 years ago, memorised stuff & passed. But for the first time I’ve actually understood the stuff. Well done & thanks.

[shakked]

I have been asking multiple teachers for this explanation and never got an answer. they all said I sholde lern uni level Calculus in order to understand this. thank you

[AbhishekYadav-uyzl]

we are finding the tangent not the secant....

[farhantajwarahmed]

That "yay" was lit! You aren't a teacher only, you are a magician SIR! THANKS!!!

[drfpslegend]

This is actually really cool. I never saw a proof of this in my high school calculus class even though I had a fantastic teacher like Eddie Woo here, and I'm a 4th year math major in college now.

[argonwheatbelly]

Rote is useful for tests and application, but truly knowing why and how things work is a joy unto itself. He makes math fun, and starts to bring it back to an art, rather than a science. And yes, for me, math is an art.

[saintgersh]

It's so fun to watch and learn at the same time when you have a passionate teacher! Thanks Eddie. Bless you.

[aditimishra]

I will pay my life to make him teach me maths. I have watched like a dozen of calculus explanations. His was the best of the best. I got EVERYTHING. 😃🤓

[yugandhardixit]

I am taking your youtube video lessons all the way from India. Calculus used to be a headache for me. You have turned it into love of my life!! Thanks Sir!!

[basakayyildiz]

WHY DOES THIS HAVE SUCH A LITTLE NUMBER OF VIEWERS HE IS LITERALLY DOING GODS WORK

[NekoPablo]

If I had just known this during my calculus class, It would've helped and I could've not had difficulties. Now, I watched it as a graduating student for my pre-board review. I find it very helpful, thanks a lot. :)

[TFreckle]

That was awesome. 'Yay!" indeed!

[yavuzersinanyardim]

When I watch, I automatically say "oh damn, that makes sense.".

[harsh]

Damn! That's actually quite an elegant way to do it. My approach was a binomial expansion with its coefficients, but you avoided that part entirely.

[LeeMaitland]

When I clocked the binomial expansion I got nerd chills.