Show that there is a number c, with 0 0 and that f is continuous. Thus, by the Intermediate Value Theorem applied to k = 0, there is a number c in [0, 1] such that f (c) = k = 0. O We have that f(0) = - 1 0 and that f is continuous. Thus, by the Intermediate Value Theorem applied to k = 0, there is a number c in [0, 1] such that f (c) = k = 0. O We have that f(0) = 1 > 0 and f (1) = 4 > 0 and that f is periodic. Thus, by the Intermediate Value Theorem applied to k = 0, there is a number c in [0, 1] such that f (c) = k = 0. O We have that f(0) = 1 > 0 and f (1) = 4 - cos 1 > 0 and that f is continuous. Thus, by the Intermediate Value Theorem applied to k = 0, there is a number c in [0, 1] such that f (c) = k = 0. O We have that f(0) = - 1 0 and that f is periodic. Thus, by the Intermediate Value Theorem applied to k = 0, there is a number c in [0, 1] such that f (c) = k = 0