a beautiful differential equation
31:10
the geometry of the third derivative
11:56
an exceedingly interesting differential equation
14:35
the famous Calculus proof of the Pythagorean theorem.
21:16
The most interesting differential equation you have seen.
20:21
A differential equation from the famous Putnam exam.
16:52
A deceivingly difficult differential equation
21:26
a very interesting differential equation
15:42