$\"\"$

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The series $\"\"$ .

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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 telescoping sum is $\"\"$ .

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$\"\"$

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$\"\"$ .

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Find $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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Since $\"\"$ .

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$\"\"$

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$\"\"$ .

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$\"\"$ .

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Since the $\"\"$ is a real number, the series $\"\"$ is convergent. \ \

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The series is convergent and $\"\"$ .

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$\"\"$

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The series is convergent and $\"\"$ .