First time using LaTeX. Found it to be quick and easy on the eyes.

1) If $\displaystyle cos x = e^y $ and x is greater than zero and less than pi, what is $\displaystyle dy/dx$ in terms of x.

my steps

-take the derivative of both sides$\displaystyle -sinx=e^y (dy/dx)$

-this is where i am lost. I think I should take the ln of each side but i am not sure. All help is appreciated.