$\"\"$

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The series is $\"\"$ .

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Integral test:

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If $\"\"$ is convergent then $\"\"$ is convergent.

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Here $\"\"$ .

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Find $\"\"$ .

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$\"\"$

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$\"\"$

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Therefore, $\"\"$ is divergent.

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Thus by the integral test series $\"\"$ is also divergent. $\"\"$

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Series is divergent.