13. Sketch a graph of a rational function that satisfies the following conditions [4 Marks] y f (0 ) = 0, f(-4) = 2, f ( 4 ) = -2 8- f(x) is undefined for x = + 2 f ' (-4) = f'(0) = f'(4) = 0 f '(x) 4 f '(x) > 0 for -4 0 for x 2