Wednesday
October 1, 2014

Homework Help: Calculus

Posted by Isaac on Friday, July 26, 2013 at 11:23pm.

How can I prove this series alternating series converges(this is the answer)?

(-1)^2*(2/3)^n

I tried it this way: an = (2/3)^n, then i just broke it down. 2^n/(3^n) and i took the ratio of it and got 2/3 which does not equal to one which would mean the series diverges.. but that's obviously not how its done i guess

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