A Nice Differential Equation #calculus
11:36
A Nice Radical Equation #radicals #algebra
9:15
An Interesting Quartic Equation
12:56
Una ecuación diferencial no lineal especial
6:03
A Nice Infinite Sum #sequencesandseries
7:16
Sum from 1 to infinity of 1/(k^2+1)
10:29
An Interesting Differential Equation | Inspired By @blackpenredpen
10:30
An Interesting Infinite Product
8:27