Find The Interval Of Increase Or Decrease Of The                   

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Question

 

Find the interval of increase or decrease of the 

                 

Solution

Correct option is

Increasing  Decreasing 

Differentiating both sides we have 

                  [Using Leibnitz-rule]                                                                     

  

Using number line rule as shown in figure,

   

Hence (x) is increasing, when  and (x) is decreasing, when 

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