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sir does the sequence an=npi cosnpi converge or diverge

sir does the sequence an=npi cosnpi converge or diverge
 

Grade:12th pass

1 Answers

Vikas TU
14149 Points
7 years ago
an=npi cosnpi 
an = npi* (-1)^n
Thus on increasing n the magnitude would also increase in negative and positive x – axis both side.
Thus it would go continuosly. thus it converges.

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