7:56

BELIEVE IN ALGEBRA, NOT CALCULATOR

31:27

EXTREME quintic equation! (very tiring)

48:14

Lambert W Function (domain, range, approximation, solving equations, derivative & integral)

1:31:13

First time solving an A-Level maths exam! (90 minutes, uncut)

1:09:04

Elementary vs. Non-Elementary integral battles! (beyond regular calculus)

32:04

easy derivative but it took me 32 minutes

23:03

This Integral is Nuts

22:28

so you want a HARD integral from the Berkeley Math Tournament