计算|1/2005-1/2006|+|1/2006-1/2007|+|1/2007-1/2008|
题目
计算|1/2005-1/2006|+|1/2006-1/2007|+|1/2007-1/2008|
只有这么多
答案
|1/2005-1/2006|+|1/2006-1/2007|+|1/2007-1/2008|
=1/2005-1/2006+1/2006-1/2007+1/2007-1/2008
=1/2005-1/2008
=3/2008*2005
=3/4026040
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