Ⅰ1/10-1/11Ⅰ+Ⅰ1/11-1/12Ⅰ+ .+Ⅰ1/49-1/50ⅠDDDDDDDDDDD

来源：学生作业帮助网编辑：六六作业网时间：2024/05/24 06:42:55

Ⅰ1/10-1/11Ⅰ+Ⅰ1/11-1/12Ⅰ+.+Ⅰ1/49-1/50ⅠDDDDDDDDDDDⅠ1/10-1/11Ⅰ+Ⅰ1/11-1/12Ⅰ+.+Ⅰ1/49-1/50ⅠDDDDDDDDDDDⅠ1/1

Ⅰ1/10-1/11Ⅰ+Ⅰ1/11-1/12Ⅰ+ .+Ⅰ1/49-1/50ⅠDDDDDDDDDDD
Ⅰ1/10-1/11Ⅰ+Ⅰ1/11-1/12Ⅰ+ .+Ⅰ1/49-1/50Ⅰ
DDDDDDDDDDD

Ⅰ1/10-1/11Ⅰ+Ⅰ1/11-1/12Ⅰ+ .+Ⅰ1/49-1/50ⅠDDDDDDDDDDD
最后等于 1/10-1/50 =4/50=2/25

看不懂