$\"\"$

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The function is $\"\"$ .

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$\"\"$ .

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$\"\"$ .

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The maclaurin series for $\"\"$ .

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Hence $\"\"$

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$\"\"$

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Therefore, the maclaurin series for $\"\"$ is $\"\"$ .

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$\"\"$

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The maclaurina series for $\"\"$ is $\"\"$ .