interesting integrations part 3

 Introduction 

In todays article we will see another good level and interesting integration questions. As we already seen that integration is just reverse process of differentiation. So if you have good knowledge of differentiation then you can easily solve integration problems.

most of the integration problems are based on substitution or breaking it to simpler form and then look for the answer 

so lets move towards the questions

Que1) Evaluate              

                         In this question you have to covert tanx in the sin or cos terms then after the obtained expression use the method of substitution and bingo yo get the answer                     

Que2) Evaluate

In this you have to divide numerator and denominator by e^x simultaneously and then will obatin the answer of this problem very easily with the help of method of substitution

Que3) Evaluate

In this question you have to divide numerator and denominator by cosx^2 then after obtained expression simplify it in tan and sec terms and then apply the methord of substitution by letting tanx=t and you will hit the answer

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