|1/21-1/20|﹢|1/21-1/22|+|1/23-1/22|+……+|1/30-1/29|解题方法

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/09 06:29:01
|1/21-1/20|﹢|1/21-1/22|+|1/23-1/22|+……+|1/30-1/29|解题方法|1/21-1/20|﹢|1/21-1/22|+|1/23-1/22|+……+|1/30-1

|1/21-1/20|﹢|1/21-1/22|+|1/23-1/22|+……+|1/30-1/29|解题方法
|1/21-1/20|﹢|1/21-1/22|+|1/23-1/22|+……+|1/30-1/29|解题方法

|1/21-1/20|﹢|1/21-1/22|+|1/23-1/22|+……+|1/30-1/29|解题方法
|1/21-1/20|﹢|1/21-1/22|+|1/23-1/22|+……+|1/30-1/29|
=1/20-1/21+1/21-1/22+1/22-1/23+……1/29-1/30
=1/20-1/30
=1/60