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The integral is $\"\"$ .

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$\"\"$

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Evaluate the integral $\"\"$ by using parts of integration.

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Substitute corresponding values in $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Apply L-Hopital rule.

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$ .