Theorem (connection of the integral and max value of the derivative)

Question

Mathematics

Given: f(x) is continuous and differentiable on [a;b], f(a)=f(b)=0
Prove:

Answer 1

Well, go for it, young and bright mind!

Answer 2

It's on dxdy with questions like this. On the toaster, no one will post pictures to you xs from where. And dxdy can draw them himself, because latex is screwed to the forum.
Z.Y. Homework, especially according to analysis, is not a sin to do yourself. Zoricha for beer and norms. Or Fichtenholtz.