irisa
irisa irisa
  • 03-06-2017
  • Mathematics
contestada

does the following series converge or diverge 7-21+63-189

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irspow
irspow irspow
  • 03-06-2017
The common ratio is:

-21/7=63/-21=-3

So r=-3

A series only converges if r^2<1, since r^2 in this case is 9, the series diverges.
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indominus906
indominus906 indominus906
  • 03-06-2017
it is converge because it is an infinite sequence
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