Question

derivatives of (1+cos^2 7x)^3

Answer 1

let f=(1+cos^2 7x)^3
=>f'=3(1+cos^2 7x)(2cos 7x)(-sin 7x)(7)

Answer 2

THANKS SO MUCH!

ONE OTHER QUESTION. HOW DO YOU FIND THE DERIVATIVE OF THETA?

for example
tan(2-theta)

Answer 3

where do i start?

Answer 4

let f=tan(1-theta)
f'= sec^2(1-theta)(-1)

Answer 5

thanks so much!!