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68

Step-by-step Answer
PAGE: 213SET: ExercisesPROBLEM: 68
Please look in your text book for this problem Statement

The function is .

Critical number :

A critical number of a function  is a number  in the domain of  such that either 

or  does not exist.

Therefore, solutions of  are the critical numbers.

The function is .

Differentiate  on each side with respect to .

To find the critical numbers, equate  to zero.

Critical number of the function is .

 is a critical number of the function .



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