|1/2008-1/2007|+|1/2007-1/2006|+|1/2006-1/2005|+|1/2005-1/2004|+……+|1/3-1/2|+|1/2-1|
来源：学生作业帮助网 编辑：六六作业网 时间：2024/11/24 05:05:33
|1/2008-1/2007|+|1/2007-1/2006|+|1/2006-1/2005|+|1/2005-1/2004|+……+|1/3-1/2|+|1/2-1||1/2008-1/2007|+
|1/2008-1/2007|+|1/2007-1/2006|+|1/2006-1/2005|+|1/2005-1/2004|+……+|1/3-1/2|+|1/2-1|
|1/2008-1/2007|+|1/2007-1/2006|+|1/2006-1/2005|+|1/2005-1/2004|+……+|1/3-1/2|+|1/2-1|
|1/2008-1/2007|+|1/2007-1/2006|+|1/2006-1/2005|+|1/2005-1/2004|+……+|1/3-1/2|+|1/2-1|
|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
2007/2008
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