Hi,

I'm having some trouble with the task of finding the convergence interval of the following series:

$\displaystyle \sum_{n=0}^\infty \frac{n^2 - n + 1}{n!}x^n $

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- Mar 12th 2010, 08:49 AMposix_memalignFinding the interval of convergence
Hi,

I'm having some trouble with the task of finding the convergence interval of the following series:

$\displaystyle \sum_{n=0}^\infty \frac{n^2 - n + 1}{n!}x^n $ - Mar 12th 2010, 08:51 AMKrizalid
try to use the ratio test.