Question

Check my work:
Derivatives

Answer 1

Converted problem to (x^2 -1)^(1/3). D(x^2 -1)*D(x^2 -1)^(1/3) --> 2x * 1/(x^2 -1)^(-2/3) --> f(3) ---> 1/2

Answer 2

@Mertsj @radar @mathslover

Answer 3

It's good?

Answer 4

It looks like you are correct. :)

Answer 5

Agree. Good work