For the series:

To show it is divergent/convergent would you first apply the Cauchy test:

Then apply the ratio test to get the lim = sqrt(2) so it is a divergent series?

Thanks.

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- Dec 9th 2010, 07:15 AMMattWTCauchy Test
For the series:

To show it is divergent/convergent would you first apply the Cauchy test:

Then apply the ratio test to get the lim = sqrt(2) so it is a divergent series?

Thanks. - Dec 9th 2010, 07:32 AMchisigma
Is easy to see that exists an such that is...

... and then the series diverges...

http://digilander.libero.it/luposaba...ato[1].jpg

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