# Kindly solve this? which option is correct?

##### 3 Answers

This is readily seen as not doable by elementary means, so I just solved it numerically and got:

I evaluated the integral for

#### Answer:

See below.

#### Explanation:

or

Now assuming that one of the answers is true, the most natural seems to be the fourth 4)

NOTE

for

#### Answer:

#### Explanation:

As has already been shown in a previous solution,

exists and is bounded :

Now integration by parts yields

Now , since

Since

Hence