1. The problem statement, all variables and given/known data I need to find the derivative of V(u) with respect to x V(u)=((a-pX)/q)^B 2. Relevant equations f(x)=aX^b ==> f'(x)=baX^b-1 3. The attempt at a solution I wanted to distribute the B throughout and then I would have got -BpX^B-1, but I know this isn't doable. What I really need to know is how to deal with the entire function raised to a power. Once I get the function by itself (not raised to power B) I can get through it. Thanks for your help!