$\"\"$

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The exponential is $\"\"$ .

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The power series representing $\"\"$ is $\"\"$ . \ \

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Find the fifth partial sum.

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$\"\"$ .

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Substitute $\"\"$ .

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$\"\"$

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$\"\"$ .

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The fifth partial sum is $\"\"$ .

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$\"\"$

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The fifth partial sum is $\"\"$ .