1/3-1/2|+|1/4-1/3|+...+|1/100-1/99|

1/3-1/2|+|1/4-1/3|+...+|1/100-1/99|
1/3-1/2|+|1/4-1/3|+...+|1/100-1/99|

1/3-1/2|+|1/4-1/3|+...+|1/100-1/99|
l1/3-1/2|+|1/4-1/3|+...+|1/100-1/99|
=1/2-1/3+1/3-1/4+...+1/99-1/100
=1-1/100
=99/100
如果本题有什么不明白可以追问,
另外发并点击我的头像向我求助,请谅解,