can i get help with this please

5-6 The graph of a function f is given. (a) At what numbers a does lim x-a f(x) not exist? (b) At what numbers a is f not continuous? (c) At what numbers a does lim x-a f(x) exist but f is not continuous at a ? 5. YA 6. YA O- + X55-58 Use the Intermediate Value Theorem to show that there is a solution of the given equation in the specified interval. 55. -x' + 4x + 1 = 0, (-1, 0) 56. In x = x - Vx, (2, 3) 57. ex = 3 - 2x, (0, 1) 58. sin x = x2 - x, (1, 2)