Question

find derivative of g(x)= ln cos(x)

Answer 1

is the function g(x) = ln(cos(x)) ?

Answer 2

yes

Answer 3

its like the chain rule.

Answer 4

\[f(x)=\ln(x)\]\[f'(x)=\frac{ 1 }{ x }*x' \]

Answer 5

now knowing this can you do the problem

Answer 6

Thanks!!!

Answer 7

if you want to post your answer I'll check it

Answer 8

I got -tanx

Answer 9

Correct!!!