How to Find the Sum of 2^n/n! for n=2 to Infinity

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I need to find the sum of 2^n/n! from n=2 to infinity, i know that it converges to e^x but how do i find the sum?
 
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kj13529 said:
I need to find the sum of 2^n/n! from n=2 to infinity, i know that it converges to e^x but how do i find the sum?

It is e^2.
Since x^n/n! sums to e^x substitute x=2 to get answer.
 
Thanks, it was so simple -.-
 

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