$\"\"$

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The integral is $\"\"$ .

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Consider $\"\"$ .

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Differentiate with respect to $\"\"$ .

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$\"\"$

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$\"\"$

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Change of integral limits :

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

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

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Substitute corresponding values in the integral.

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$\"\"$

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$\"\"$

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$\"\"$ .