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sir does the sequence an=npi cosnpi converge or diverge

RAMESH , 9 Years ago
Grade 12th pass
anser 1 Answers
Vikas TU
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.
Last Activity: 9 Years ago
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