Verify that Rolle's Theorem can be applied to the function f (x) = x3 - 13x2 + 50x - 56 on the interval [2, 7]. Then find all values of c in the interval such that f (c) = 0. Enter the exact answers in increasing order. To enter va, type sqrt(a). a a sin (a) ? C= va a sin (a) ? c = >