Question

Power Series. Prove that sum (n/(n+1)!) = 1

Answer 1

\[\sum_{0}^{\infty} (n/(n+1)!) = 1\]

Answer 2

I'll give a hint...

\[\frac{n}{(n+1)!}=\frac{n+1-1}{(n+1)!}=\frac{1}{n!}-\frac{1}{(n+1)!}\]

Answer 3

há ! Good one ! THANK YOU ! hahahahaha brilhant

Answer 4

:)