a very nice differential equation
16:52
A deceivingly difficult differential equation
21:26
a very interesting differential equation
13:47
Hardy's Integral
10:34
Feynman's trick is the coolest way to solve tough integrals
47:38
Differential Equations. All Basics for Physicists.
16:14
This integral looks crazy
12:33
what a nice Diophantine equation.
15:29