Question

Problem 29a

Answer 1

Given information

Given:-

Step-by-step explanation

Step 1.

Firstly, to find the intervals of increase or decrease we must have to find the critical numbers of the given function.

and for the critical numbers, we have to find the first derivative of the given function. so,

          (by quotient rule)

 

so, the roots of the first derivative will be the critical number of the given function

 

by solving this we get the value of x

 

because for x=0, the first derivative is not defined.

that's why we obtain the critical numbers as