$\"\"$

The integral is $\"\"$ .

Consider $\"\"$ .

Apply derivative on each side.

$\"\"$

Change in integral limits :

Lower limit: If $\"\"$ then $\"\"$ .

Upper limit: If $\"\"$ then $\"\"$ .

Substitute $\"\"$ , $\"\"$ and change of limits in $\"\"$ .

$\"\"$

$\"\"$ .

$\"\"$

$\"\"$ .