如何证明:1+1/2!+1/3!+------+1/n!

问题描述:

如何证明:1+1/2!+1/3!+------+1/n!

数学人气:743 ℃时间:2020-06-12 16:37:10
优质解答
1/n!1+1/2!+1/3!+……+1/n!
=2-1/n

1/n!1+1/2!+1/3!+……+1/n!
=2-1/n