1. The problem statement, all variables and given/known data What is the derivative of e^y? i think i am differentiating with respect to x 2. Relevant equations Derivative of y^x is y^x 3. The attempt at a solution I don't know if I should use the chain rule or treat it like y^x. When i used the chain rule I got ye^y-1, but then I wondered if it should be e^y.