Hi,

I'm not able to check if the following serie converges or not:

$\displaystyle \sum_{n} \frac{1}{\sqrt{n(1+n^2)}}$

The ratio test didn't work, and I think I need a majorant or a minorant but I can't find one.

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- Jun 16th 2012, 10:52 AMSironDoes the serie converge or not?
Hi,

I'm not able to check if the following serie converges or not:

$\displaystyle \sum_{n} \frac{1}{\sqrt{n(1+n^2)}}$

The ratio test didn't work, and I think I need a majorant or a minorant but I can't find one. - Jun 16th 2012, 11:04 AMReckonerRe: Does the serie converge or not?
- Jun 16th 2012, 11:31 AMSironRe: Does the serie converge or not?
Thanks! ;)