Chapter 2.8, Problem 44E

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8th Edition

James Stewart

ISBN: 9781305270343

Textbook Problem

The graph of *f* is given. State, with reasons, the numbers at which *f* is *not* differentiable.

To determine

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

Explanation

**Note:**

The function *f* is not differentiable at the point *a,* then it must be satisfied 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 points at

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