But HOW did Euler do it?! A BEAUTIFUL Solution to the FAMOUS Basel Problem!
15:36
Deriving the Infinite Product Representations for all the Trigonometric Functions!
22:27
a spectacular solution to the Basel problem (sum of 1/n^2 via a complex integral)
17:08
Why is pi here? And why is it squared? A geometric answer to the Basel problem
17:16
Euler's real identity NOT e to the i pi = -1
13:55
Imaginary numbers aren't imaginary
9:59
Cauchy's Proof of the Basel Problem | Pi Squared Over Six (3blue1brown SoME1 Entry)
10:42
e (Euler's Number) - Numberphile
19:32