1-2/3-1/6-1/12-1/24-1/48-……1/768

分类: 作业答案 • 2021-12-31 12:27:50

问题描述：

答

1-2/3-1/6-1/12-1/24-1/48-……1/768
=1/3-1/6-1/12-1/24-1/48-……1/768
=1/6-1/12-1/24-1/48-……1/768
=1/12-1/24-1/48-……1/768
=1/24-1/48-……1/768
=1/768