8:25

Differentiation a^x from first principles

16:43

A Vieta Problem

16:54

An integral with a classic result

22:38

Comment attraper un tricheur avec les mathématiques

13:33

Ancient trick to calculate ANY square root

10:44

an interesting integral

13:14

When f(x) = f(a-x)

9:55

Is x^x=0 solvable?