$\"\"$

\

The integral is $\"\"$ .

\

$\"\"$

\

Consider $\"\"$ .

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Let $\"\"$ .

\

$\"\"$

\

$\"\"$

\

Substitute corresponding values in above integral.

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

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

\

$\"\"$ .

\

$\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Substitute corresponding values in above integral.

\

$\"\"$

\

$\"\"$

\

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

\

$\"\"$

\

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

\

$\"\"$

\

Thus, $\"\"$ .

\

$\"\"$

\

The improper integral $\"\"$ .

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$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

The improper integral $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Substitute corresponding values in above equation.

\

$\"\"$

\

Thus, $\"\"$ .

\

$\"\"$

\

$\"\"$ .