$\"\"$

The integral is $\"\"$ .

$\"\"$

Consider $\"\"$ .

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

$\"\"$

Change the integration intervals:

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

Substitute $\"\"$ and $\"\"$ in the equation $\"\"$ .

$\"\"$

$\"\"$ .

$\"\"$

$\"\"$ .