$\"\"$

\

The integral is $\"\"$ .

\

consider $\"\"$ .

\

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

\

$\"\"$

\

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

\

$\"\"$

\

Replace $\"\"$ in above expression.

\

$\"\"$ .

\

$\"\"$

\

$\"\"$ .