a very nice functional/differential equation
21:26
a very interesting differential equation
13:44
on the growth of a nice recursive sequence
8:47
A Functional Equation from Samara Math Olympiads
18:44
A deceivingly difficult differential equation.
12:50
Homogeneous Differential Equations (Worked Example)
26:37
the complex derivative is strange...
18:27
'You Don't See All The Things That Led Up To This': Rubio Defends Trump After Clash With Zelensky
9:21