3/27 + h - 3 12. Find lim in two steps: h -0 h 3/27 + h - 3 (a) (2 points) Find a function f and a number a such that f' (a) = lim h-0 h (b) (2 points) Evaluate f'(a) using the power rule. (Your answer in (b) should be a number, not an abstract expression involving a)