In this video, I calculate the half-derivative of 1, using the formula for the half-derivative. Warning: The answer is not 0. Enjoy!

What is the radius of the circle, in simplest terms involving a, b, and c? I read that even the great mind Richard Feynman made a mistake. Watch the video to learn the common mistake and what the correct answer is.

Source Feynman story
http://web.media.…

Check out bootstrapboards: https://bootstrapboards.com/partner/blackpenredpen/ 10% coupon code: BLACRD18 examples of the functions: f(x)=x*abs(x), f(x)=x^(4/...

A short animation about a visual solution to an alternating series:)

_________________________________________________________________

Support my animations on:

https://www.patreon.com/Think_twice

_________________________________________________________________…

In this video, I use a clever change of basis to calculate a pretty complicated trig polynomial function. Of course one could do this directly, but linear algebra puts this in a nice systematic framework.

related rates, angle of sight of a rising ballon, Related rates example, this problem is taken from Single Variable Calculus, by James Stewart, 8th Ed, early...

Horizontal and vertical asymptotes of polar curve, Convert polar to rectangular, https://youtu.be/-g5-cyJQjgM Please subscribe for more calculus tutorials an...

Numberphile Playing Cards: http://bit.ly/NumberphileCards
More card videos: http://bit.ly/Cards_Shuffling
More links & stuff in full description below ↓↓↓

Featuring Tadashi Tokieda, a professor of mathematics at Stanford University.

More Tadashi Videos:…

In this video, I calculate ln(i), and explain that there are actually two different answers depending on how you interpret it. Then I explain the difference between log(z) and Log(z) (the principal logarithm). Finally I show that for complex numbers we may…

Start learning today such as the Newton's method, click https://brilliant.org/blackpenredpen/ to check out Brillant.org. First 200 people to sign up will get 20% off your annual premium subscription!

Newton's Method: https://brilliant.org/wiki/newton-raphson…

In this video, yet another Peyam Classic, I calculate the integral of ln(sin x) from 0 to pi/2 using a clever u-substitution. Thank you Zach Lee for giving me the main ideas for the proof!

On the SAT exam, you have about 2 minutes to read and solve each math question. This one about averages can send you in a loop, unless you approach it systematically. In the video I also explain a shortcut to help you solve this type of problem quickly.
…

This video about my first job is dedicated to my high school art teacher, Mr. Sergio Salas. Let me know if there's anything else that you would like to know more about me. Leave your comments/questions down below and I may make more videos just like this!…