(1 point) If f is a differentiable function, find an expression for the derivative of each of the following functions: In submitting the answers below, write f(x) as f, and write f' (x) as g. (a) Ify = x2f(x), then y' = f(x) (b) Ify = , then y' = (c) If y = then y = f(x) 1 + xf (x) (d) If y = , then y = Vx(1 point) Let P(x) = F (x)G(x) and Q(x) = F (x)/G(x), where F (x) and G(x) are the functions whose graphs are shown. (a) Find P' (2): (b) Find Q'(7)