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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
27 Oct 2021

Given information

Given that the graph

Step-by-step explanation

Step 1.

Since the graph of the function is symmetric about the y-axis so the graph of the derivative will be symmetric about the origin.

The graph of the function has a horizontal tangent at so derivative will be 0 at .

For , the graph of the function is decreasing so the derivative will be negative, and for , the graph of the function is increasing so the derivative will be positive.

 

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