For each function in Problem do the following.
(a) Find f'(x).
(b) Graph both f(x) and f'(x) with a graphing utility.
(c) Use the graph of f'(x) to identify x-values where f(x) = 0, f(x) >, and f(x) < 0.
(d) Use the graph of f(x) to identify x-values where f(x) has a maximum or minimum point, where the graph of f(x) is rising, and where the graph of f(x) is falling.
f(x) = x3 - 12x - 5