How do I evaluate the infinite series (2^n)/(n!) from n=0 to infinity?(adsbygoogle = window.adsbygoogle || []).push({});

(I dont know how you put the little E symbol and all that in so I had to write it out.)

I already found that it converges to 0 using the ratio test, but I dont know quite how to evaluate it.

Any help would be mondo appreciated! Thank you!!!

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# Evaluating Infinite Series

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