Chapter 3: Derivatives - Section 3.2 - The Derivative as a Function - Exercises 3.2 - Page 117: 43

a. All points in the interval. b. No points in the interval. c. No points in the interval.

a. Examine the graph given by the Exercise; we can find that all the points in the interval of the function are differentiable. b. Examine the graph given by the Exercise; we can find that no points in the interval of the function are continuous but not differentiable. c. Examine the graph given by the Exercise; we can find that no points in the interval of the function are neither continuous nor differentiable.