
Concept explainers
To state: The graph of the function f is not differentiable at which the numbers.

Answer to Problem 35E
The function f is not differentiable at −4 and 0.
Explanation of Solution
Note: The function f is not differentiable at the point a, then it must satisfies any of the following conditions.
(i) The function f is discontinuous at the point a.
(ii) The function f has a corner point at the point a.
(iii) The function f has a vertical tangent at the point a.
From the graph of f, it is observed that f has a corner point at
The graph of f has a jump discontinuity at
Therefore, f is discontinuous at
Thus, it can be concluded that, f is not differentiable at the point
Chapter 2 Solutions
Single Variable Calculus: Concepts and Contexts, Enhanced Edition
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