$\"\"$

The integral is $\"\"$ .

Consider $\"\"$ .

Differentiate on each side with respect to $\"\"$ .

$\"\"$

Change in integral limits :

If $\"\"$ , then $\"\"$ .

$\"\"$

Substitute $\"\"$ , $\"\"$ and integral limits in the above integral.

$\"\"$

$\"\"$ .

$\"\"$

$\"\"$ .