|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|=?

[1\2-1|+|1\3-1\2|+…+|1\2008-1\2007|=1/2008-1=-2007/2008