|1/2008-1/2007|+|1/2007-1/2006|+|1/2006-1/2005|+|1/2005-1/20

|1/2008-1/2007|+|1/2007-1/2006|+|1/2006-1/2005|+|1/2005-1/2004|+……+|1/3-1/2|+|1/2-1|
九条尾巴的 1年前 已收到3个回答 举报

吴卓義 幼苗

共回答了8个问题采纳率:100% 举报

|1/2008-1/2007|+|1/2007-1/2006|+|1/2006-1/2005|+|1/2005-1/2004|+……+|1/3-1/2|+|1/2-1|
=1-1/2+1/2-1/3+……+1/2004-1/2005+1/2005-1/2006+1/2006-1/2007+1/2007-1/2008
=1-1/2008
=2007/2008

1年前

10

天生来踩黛玉0som 幼苗

共回答了29个问题 举报

2007/2008

1年前

2

小田哼哼 幼苗

共回答了13个问题采纳率:84.6% 举报

1/2008-1/2007|+|1/2007-1/2006|+|1/2006-1/2005|+|1/2005-1/2004|+……+|1/3-1/2|+|1/2-1|
=1-1/2+1/2-1/3+……+1/2004-1/2005+1/2005-1/2006+1/2006-1/2007+1/2007-1/2008
=1-1/2008
=2007/2008

1年前

2
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