$\"\"$

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The functions are $\"\"$ and $\"\"$ .

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Evaluate $\"\"$ .

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$\"\"$ $\"\"$

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$\"\"$

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$\"\"$ . \ \

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Substitute the value $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ . $\"\"$

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The value of function $\"\"$ .