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11a
Problem

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Textbook Expert
Textbook ExpertVerified Tutor
13 Nov 2021

Given information

As per the given question ,

  • The function attains its local maximum at  
  • The function is differentiable at  

 

Step-by-step explanation

Step 1.
The objective is to sketch the graph of a function that has a local maximum at   and is differentiable at   .
 
Assume the function  
 
The function is differentiable and calculate the first derivative of the function  and equate it to zero to calculate the critical points as,
 
 
 
The function has only one critical point at  
 
Calculate the second derivative of the function at   as follows:
 
 
 
Thus, the second derivative at the critical point   of the function ,  is negative and hence local maximum occur at   .
The graph of the function is as shown below:

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