$\"\"$

The integration function is $\"\"$ .

$\"\"$

Apply the sum and difference rule of integration : $\"\"$ .

$\"\"$

Consider $\"\"$ .

$\"\"$

Let $\"\"$ then $\"\"$ .

Integration by parts : $\"\"$ .

$\"\"$

Substitute equation (2) in equation (1).

$\"\"$

$\"\"$ .