Question

sum_{n=3}^{infty} [(n^2)/(e^n)] with steps

Answer 1

\[\sum_{n=3}^{\infty} [(n^2)/(e^n)]\]

Answer 2

Wolframed, cause I don't know how to do the problem; they do though...
http://www.wolframalpha.com/input/?i=sum_ {n%3D3}^{infty}+[%28n^2%29%2F%28e^n%29]

Answer 3

wolfram doesn't show me the work though

Answer 4

Alright, I'm useless. try r/cheatatmathhomework.