What's the derivative of (1/3x^2)? I dont really understand how to use the power rule with this one. I know its Y'=Nx^N-1 but how do I put this fraction into something like that? Is it like 3x^-3? then taking the derivative of that becomes -9^-4???? The entire quiestion is (1/3x^-2) - (5/2x) I dont understand how to find the derivative of the other side either really. Help GREATLY appreciated.