$\"\"$

The statement is $\"\"$ , where $\"\"$ .

Need to verify $\"\"$ .

Consider $\"\"$ .

$\"\"$ .

Apply derivative on each side with respect to $\"\"$ .

$\"\"$

$\"\"$ .

Substitute $\"\"$ and $\"\"$ in integral.

$\"\"$

$\"\"$ .

Therefore, $\"\"$ . $\"\"$

$\"\"$ .