Determine Whether the Sequence $a _ { n } = \frac { ( - 1 ) ^ { n - 1 } } { n . 1 }$

question 30

Essay

Determine whether the sequence $a _ { n } = \frac { ( - 1 ) ^ { n - 1 } } { n . 1 }$ converges or diverges. If it converges, find the limit.

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