$\"\"$

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The expression is $\"\"$ .

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Assume $\"\"$ .

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Apply derivative on each side.

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$\"\"$

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Change in limits of integration : \ \

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

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

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Substitute the corresponding values in $\"\"$ .

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$\"\"$

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$\"\"$

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Conisder $\"\"$ .

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Integration by parts: $\"\"$ .

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Let $\"\"$ and $\"\"$ .

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$\"\"$

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$\"\"$ .

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$\"\"$

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$\"\"$ .