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Determine Whether n=1cosn+3nn2+5n\sum _ { n = 1 } ^ { \infty } \frac { \cos n + 3 ^ { n } } { n ^ { 2 } + 5 ^ { n } }

Question 33

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Determine whether n=1cosn+3nn2+5n\sum _ { n = 1 } ^ { \infty } \frac { \cos n + 3 ^ { n } } { n ^ { 2 } + 5 ^ { n } } is convergent or divergent.

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