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Consider the Sequence Defined By an=(1)na _ { n } = ( - 1 ) ^ { n }

Question 329

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Consider the sequence defined by an=(1)na _ { n } = ( - 1 ) ^ { n } . (n starts at 1)
(a) Write the first five terms of the sequence.(b) Determine the limit of the sequence.(c) Let bn=an+1anb _ { n } = \frac { a _ { n + 1 } } { a _ { n } } . Write the first five terms of this sequence.(d) Determine the limit of bnb _ { n } .(e) Let cn=k=1nakc _ { n } = \sum _ { k = 1 } ^ { n } a _ { k } . Write the first five terms of this sequence.(f) Determine the limit of cnc _ { n } .

Correct Answer:

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(a) -1, 1, -1, 1, -1
(b) Does ...

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