Step 1:

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The expression is $\"\"$

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Substitute $\"\"$ .

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$\"\"$

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$\"\"$

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Changing the limits of integration

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$\"\"$ and $\"\"$

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$\"\"$ and $\"\"$

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$\"\"$

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Use integration by parts:

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$\"\"$

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$\"\"$

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Solution:

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$\"\"$ .