Step 1 :

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The integral is $\"\"$ .

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Consider $\"\"$ .

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Derivative on each side with respect to $\"\"$ .

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$\"\"$

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Change intervals:

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When $\"\"$ .

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When $\"\"$ .

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

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$\"\"$

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Solution :

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$\"\"$ .