Investigate whether the series ∑_(n =1) to ∞ of [(-1)^(n+1)]/√n is absolutely convergent, conditionally convergent or divergent.

All help appreciated. Thanks.

- Jan 19th 2010, 09:08 AMalphaConvergent, conditionally convergent or divergent. Need help with this please.
Investigate whether the series ∑_(n =1) to ∞ of [(-1)^(n+1)]/√n is absolutely convergent, conditionally convergent or divergent.

All help appreciated. Thanks. - Jan 19th 2010, 09:13 AMDrexel28
- Jan 19th 2010, 09:23 AMalpha
I have no idea about this. I am no good at series and cant asnwer this question.

Thanks. - Jan 19th 2010, 09:44 AMKrizalid
You were told what to do, and I would've answered as Drexel28 did.

- Jan 19th 2010, 10:02 AMalpha
How do i work out whether this series converges? As I told, I am no good at this topic so am struggling on how to tackle this question.

- Jan 19th 2010, 10:54 AMKrizalid