just an average recursion...OR IS IT?
20:33
a quaternion version of Euler's formula
17:34
A minimum problem that is too much for calculus to handle.
17:09
How to deal with any recursive sequence.
14:47
An Exact Formula for the Primes: Willans' Formula
10:44
an interesting integral
16:56
the most creative definition of sine and cosine
32:18
PERFECT CHESS BY MAGNUS CARLSEN!!!!
13:14