Sn=1/1!+1/2!+1/3!+1/4!+……+1/n!+……

题目

Sn=1/1!+1/2!+1/3!+1/4!+……+1/n!+……
n无穷大,

答案

e=1/0!+1/1!+1/2!+1/3!+1/4!+……+1/n!+…… 所以1/1!+1/2!+1/3!+1/4!+……+1/n!+……=e-1