$\"\"$

\

The definite integral is $\"\"$ .

\

Find the integral by completing the squares.

\

$\"\"$

\

Assume $\"\"$ , then $\"\"$ .

\

Differentiate on each side.

\

$\"\"$ .

\

Change of integral limits:

\

Lower limit : If $\"\"$ then $\"\"$ .

\

Upper limit : If $\"\"$ then $\"\"$ .

\

Substitute corresponding values in the integral.

\

$\"\"$

\

Apply formula : $\"\"$ .

\

Apply formula : $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

$\"\"$ .