$\"\"$

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The integral is $\"\"$ .

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Apply sum rule of integration: $\"\"$

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$\"\"$

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Apply the power rule 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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Graph of the function $\"\"$ :

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$\"\"$ .

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$\"\"$

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$\"\"$ .