Evaluate: <span l

Given:

To find: the value of the given expression

Let

We know, , substituting this in the above equation, we get

But , so above equation becomes,

We know So the above equation becomes

Taking LCM we get

Applying we get

Applying the sum rule of integration, we get

Substituting value from equation (i), we get

Or,

Taking out the constant term, we get

On integrating, we get

Now applying the limit, we get