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!!!

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Evaluating Infinite Series

**Physics Forums | Science Articles, Homework Help, Discussion**