|1\2-1|+|1\3-1\2|+…+|1\2008-1\2007|=?
问题描述:
|1\2-1|+|1\3-1\2|+…+|1\2008-1\2007|=?
答
[1\2-1|+|1\3-1\2|+…+|1\2008-1\2007|=1/2008-1=-2007/2008
|1\2-1|+|1\3-1\2|+…+|1\2008-1\2007|=?
[1\2-1|+|1\3-1\2|+…+|1\2008-1\2007|=1/2008-1=-2007/2008