A Series $\sum _ { k = 1 } ^ { \infty } a _ { k }$

A series $\sum _ { k = 1 } ^ { \infty } a _ { k }$ has partial sums, $S _ { n }$ , given by $S _ { n } = \frac { 7 n - 2 } { n }$ (a) Is $\sum _ { k = 1 } ^ { \infty } a _ { k }$ convergent? If it is, find the sum.(b) Find $\lim _ { n \rightarrow \infty } a _ { k }$ .(c) Find $\sum _ { k = 1 } ^ { 200 } a _ { k }$

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(a) , which is the ...

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