Need some help with this question does the series Sum of from n=1 to infinity i've tried ratio test method and end up with 1/2 which says the series converges but this series apparently diverges..
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Originally Posted by Kevlar Sum of from n=1 to infinity i've tried ratio test method and end up with 1/2 which says the series converges but this series apparently diverges.. You made a mistake. Ratio: .
ahhh yeh i got it now i got 2 which is >1 therefore divergent
As a matter of fact, for some "n" will get that the numerator is bigger than the denominator, hence the divergence is obvious.
Originally Posted by Kevlar Need some help with this question does the series Sum of from n=1 to infinity i've tried ratio test method and end up with 1/2 which says the series converges but this series apparently diverges.. Excause me, Do you know the nth term test ?
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