Question

Find derivative of f = sin(x), but there's a catch!

Answer 1

Find derivative of f = sin(x) on (0, pi)

Answer 2

I know f' = cos(x), but what do I do with the "on (0, pi)?

Answer 3

(0, pi) is your domain

Answer 4

how do i write out my answer if my domain is only (0, pi)

Answer 5

what is the cos(pi)?