Central value of the partial exponential function

Question

I need help calculating the central value of the partial exponential function :

$$\lim_{n \to \infty} e^{-n} \sum^n_{k=0} \frac{n^k}{k!}$$

fd

Related to a sum of independent Poisson random variables with parameter 1 — user66322, Mar 18 '13 at 22:37

score 2 · Accepted Answer · edited Apr 13 '17 at 12:21

2

This has already been answered here.

edited Apr 13 '17 at 12:21

Community

answered Mar 18 '13 at 23:14

robjohn

score 1 · Answer 2 · answered Mar 18 '13 at 22:39

1

I think it goes to 1/2 ... after all, you have half the series :-)

answered Mar 18 '13 at 22:39

Fred

2 Answers2