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The function is $\"\"$ .

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Find $\"\"$ .

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Property of the definite integrals: $\"\"$ .

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$\"\"$ .

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From the given piecewise function.

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If $\"\"$ then, $\"\"$ .

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If $\"\"$ then, $\"\"$ .

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Substitute above values in $\"\"$ .

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$\"\"$ .

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Property of the definite integrals: $\"\"$ .

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Result in exercise $\"\"$ is $\"\"$ .

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$\"\"$

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$\"\"$ .