7:02

multiply it out? NOOOOOOOOOO!

11:54

a very classic "selection" problem

12:39

these are the only perfect squares

8:41

Can we have the Lambert W inside the integral?!?

11:18

So much TRIG!!!

6:43

Limit as n approaches infinity of (n!)^(1/n)/(n)

4:20

This shortcut can save you HOURS! (ok ok minutes)

5:08

Weird problem!