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Textbook Expert
Textbook ExpertVerified Tutor
11 Nov 2021

Given information

Note that the function,.

The objective is to find all the points on the graph at which the tangent line is horizontal recollect that ,

(1) The slope of horizontal tangent lines is .  

(2) If and are differentiable function,then .  

Step-by-step explanation

Step 1.

First, differentiate the function.

 with respect to .

 

     

 

 

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