Problem 5(10 points) The following function is everywhere continuous. f(x) = 1 21 1/-1, 151. (a)(5 points) At each of the following points, say whether the function is differentiable by circling the correct answer: Diff. if it is differentiable and Nondiff. if it is nondifferentiable. Show your work and give reasons for your answers. In this problem, you may use any formula you know for the derivatives; you need not use the limit definition. c = 2. Diff. or Nondiff. C =0. Diff. or Nondiff.(b) (5 points) On the grid below, sketch the graph of y = /(a). Carefully label the points on the graph where r = 0 and where a = 2. Make certain your sketch matches your answer from (a) at each of these points. 4 1 -5 -4 -3 -2 -1 1 2 3 4 5 -1 -2+ -3 -4+ -5+