(1-1/2)(1/3-1)(1-1/4)(1/5-1)``````(1/2009)(11/2010)

来源：学生作业帮助网编辑：六六作业网时间：2024/11/15 01:24:31

(1-1/2)(1/3-1)(1-1/4)(1/5-1)``````(1/2009)(11/2010)(1-1/2)(1/3-1)(1-1/4)(1/5-1)``````(1/2009)(11/201

(1-1/2)(1/3-1)(1-1/4)(1/5-1)``````(1/2009)(11/2010)
(1-1/2)(1/3-1)(1-1/4)(1/5-1)``````(1/2009)(11/2010)

(1-1/2)(1/3-1)(1-1/4)(1/5-1)``````(1/2009)(11/2010)
(1-1/2)(1/3-1)(1-1/4)(1/5-1)``````(1－1/2009)(1－1/2010)
=½×2/3×3/4×4/5x—-×2008/2009×2009/2010
=1/2010