BuyFind*launch*

4th Edition

James Stewart

Publisher: Cengage Learning

ISBN: 9781337687805

Chapter 2.7, Problem 6E

To determine

**To Sketch:** The graph of *f.*

Expert Solution

From the given graph, it is observed that the graph of *f* contains the horizontal tangent at one point. Let this point be *A*.

Note that, the value of the derivative will be zero at the point where the function has the horizontal tangent.

Thus, the graph of *A*.

From the point *A* to left, the slope of the graph *f* is strictly positive which implies that the derivative graph

From the point *A* to right, the slope of the graph *f* is negative which implies that the derivative graph

**Graph:**

Use the above information and obtain the graph of

From Figure 1, the required graph of