$\"\"$

\

The integral expression is $\"\"$ .

\

Consider $\"\"$ .

\

$\"\"$

\

$\"\"$ for all values of $\"\"$ .

\

Integrate on each side.

\

$\"\"$

\

Property of integrals in exercise $\"\"$ : $\"\"$ .

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

$\"\"$ .