6- 4 N 21 O -2 4 -x -CO 6 8 Graph of f Let f be the continuous function defined on [-1, 8] whose graph, consisting of two line segments, is shown above. Let g and h be the functions defined by g(x) = √√x² - x + 3 and h (x) = 5e² - 9 sin x. (a) The function k is defined by k (x) = f (x) g (x). Find k' (0).