$\"\"$

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The integral function is $\"\"$

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Assume $\"\"$ .

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

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$\"\"$

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$\"\"$

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$\"\"$

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Substitute $\"\"$ and $\"\"$ in integral function.

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$\"\"$

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$\"\"$

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$\"\"$

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Power rule of integral : $\"\"$ .

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$\"\"$

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$\"\"$

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

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$

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$\"\"$ .