Ⅰ1/10-1/11Ⅰ+Ⅰ1/11-1/12Ⅰ+ .+Ⅰ1/49-1/50ⅠDDDDDDDDDDD
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/29 23:03:20
![Ⅰ1/10-1/11Ⅰ+Ⅰ1/11-1/12Ⅰ+ .+Ⅰ1/49-1/50ⅠDDDDDDDDDDD](/uploads/image/z/942511-31-1.jpg?t=%E2%85%A01%2F10-1%2F11%E2%85%A0%2B%E2%85%A01%2F11-1%2F12%E2%85%A0%2B+.%2B%E2%85%A01%2F49-1%2F50%E2%85%A0DDDDDDDDDDD)
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