Homework Help: Finding derivative of f(X) = sin(cos(x^5))

1. Oct 24, 2006

i3uddha

alright so i was given this problem:
f(X) = sin(cos(x^5))
and it tell me to find the first derivative of it.
would i first solve the derivative of (cos(x^5)) first and then that answer with sin?
or would i use the chain rule?

2. Oct 24, 2006

James R

Chain rule.

Start by putting $u=cos(x^2)$ and $y = sin u.$

3. Oct 24, 2006

James R

Chain rule.

Start by putting $u=cos(x^2)$ and $y = sin u.$