$\"\"$

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The integral is $\"\"$ .

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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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$\"\"$

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The definite integral is $\"\"$ .

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Consider the integrand as $\"\"$ .

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Graph the function $\"\"$ on $\"\"$ .

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$\"\"$

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Observe the graph:

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$\"\"$ .

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$\"\"$

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$\"\"$ .