$\"\"$

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The function is $\"\"$ .

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Determine the function is even or odd.

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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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The integrand $\"\"$ is an even function.

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$\"\"$

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If $\"\"$ is an even function, then $\"\"$ .

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$\"\"$

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Let $\"\"$ .

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Apply derivative on each side respect to $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$

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Substitute $\"\"$ and $\"\"$ in $\"\"$ . $\"\"$

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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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$\"\"$ .

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$\"\"$

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$\"\"$ .