$\"\"$

\

The integral is $\"\"$ .

\

Consider $\"\"$ .

\

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

\

$\"\"$ .

\

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

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

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

\

$\"\"$

\

$\"\"$

\

$\"\"$ $\"\"$ . \

\

$\"\"$

\

$\"\"$ $\"\"$ .

\

\