(1)

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Step 1:

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The integral is $\"\"$ .

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Consider $\"\"$ .

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$\"\"$

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$\"\"$

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Substitute $\"\"$ in the integral.

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$\"\"$

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Constant multiple rule of integral : $\"\"$ .

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$\"\"$ .

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Step 2:

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$\"\"$

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Integration by parts: $\"\"$ .

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Assume $\"\"$ and $\"\"$ .

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Consider $\"\"$ .

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Differentiate on each side.

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$\"\"$ .

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Consider $\"\"$ .

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Integrate on each side.

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$\"\"$

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$\"\"$ .

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Substitute corresponding value in the integral.

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$\"\"$

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$\"\"$

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$\"\"$

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Substitute $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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Solution:

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$\"\"$

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(2)

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Step1:

\

The integral is $\"\"$ .

\

Consider $\"\"$ .

\

$\"\"$

\

$\"\"$

\

Substitute $\"\"$ in the integral.

\

$\"\"$

\

Constant multiple rule of integral : $\"\"$ .

\

$\"\"$

\

Step 2:

\

$\"\"$

\

Integration by parts: $\"\"$ .

\

Assume $\"\"$ and $\"\"$ .

\

Consider $\"\"$ .

\

Differentiate on each side.

\

$\"\"$ .

\

Consider $\"\"$ .

\

Integrate on each side.

\

$\"\"$

\

$\"\"$ .

\

Substitute corresponding value in the integral.

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Substitute $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

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Solution:

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$\"\"$