I need help finding the radius & interval of convergence of the following power series:(adsbygoogle = window.adsbygoogle || []).push({});

The sum from n=0 to infinity of...

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

I think the ratio test is supposed to work, but I narrow the limit of the test down to 1/|x-1|^3 < 1, and this doesn't make sense to me. Is there an easier way, or am I doing something wrong?

Thanks.

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# Radius / Interval of Convergence (Power Series)

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