Re: Derivative with two natural logarithms: Can't figure out which rule to use
Originally Posted by ReneG
I know the answer is
but have no idea which rule I should use, and what I should do to carry it out.
You have the function 2 - cos(x) inside a logarithm function, inside another logarithm function. Since this composition is three functions deep, you will need three links in your chain when you use the chain rule, i.e. .