k/(k+1)!求和的极限
问题描述：
k/(k+1)!求和的极限
k从1到n,n趋向无穷
答
k/(k+1)!=(k+1-1)/(k+1)!
=1/k!-1/(k+1)!
Sk=(1-1/2!)+(1/2!-1/3!)+……+[1/k!-1/(k+1)!]
=1-1/(k+1)!所以，极限为1👍👍👍厉害！👍谢了