What is the derivative of the function g(x)=ln(cosx) ?
2 Answers
Jun 24, 2018
Explanation:
Using the chain rule:
Jun 24, 2018
Explanation:
"differentiate using the "color(blue)"chain rule"differentiate using the chain rule
"given "y=f(g(x))" then"given y=f(g(x)) then
dy/dx=f'(g(x))xxg'(x)larrcolor(blue)"chain rule"
d/dx(ln(cosx))
=1/cosx xxd/dx(cosx)=-sinx/cosx=-tanx