In case you're curious how I teach live, in this video you can see both the first 4 minutes and the last 4 minutes of my the last Math 2B (Calculus) lecture of Fall 2017 at UC Irvine. Enjoy!

Viviani's theorem basically states that the sum off lengths of 3 lines, drawn at 90 degrees from the sides of an equilateral triangle to any inner point is always equal to the height.

saw this theorem online and thought that I would program a nice and simple…

I will show you how to derive the vertex formula of a parabola. That is, the vertex of a parabola y=ax^2+bx+c is at x=-b/(2a). I will use the algebra way, completing the square, and the calculus way, taking the derivative & critical number, to prove the formula.…

Questions: http://3b1b.co/questions
Answers: https://youtu.be/1nxF19qDBQ0
Full net neutrality video: https://youtu.be/hKD-lBrZ_Gg
Ben Eater's channel: https://www.youtube.com/user/eaterbc
First Q&A Answers: https://youtu.be/8r5WKpK9-m8
CGPGrey's (excellent)…

In this video, I will show you how to derive the vertex formula of a cubic curve. You can also check out part1 here: https://youtu.be/naX9QpCOUAQ The calculu...

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Last episode we discussed Symmetric cryptography…

In this video, I will show you how to derive the vertex formula of a cubic curve. You can also check out part1 here: https://youtu.be/naX9QpCOUAQ

The calculus part is meant to be algebra-student friendly! So, even you haven't studied calculus before, take…

second derivative of x^(1/x), blackpenredpen, math for fun,

Dimensions - Um passeio matemático Parte 1 O Baricentro da Mente No Youtube, parte 1 a 7: https://www.youtube.com/playlist?list=PL0OXRkTq9wXt9QnBg9oVxa3KJmfANUbL6

This video features Dr Hannah Fry (more links below) ↓↓↓
Check out Brilliant.org: https://brilliant.org/numberphile (20% off premium subnoscription)

That circle cutting problem on Brilliant: https://brilliant.org/NumberphileSandwich

Hannah Fry on Twitter:…

integral battle, international version, bprp vs. flammable maths, flammable maths (formerly known as fapable maths): https://youtu.be/iCwiDPL3EMI , blackpenr...