(1/2012-1)(1/2011-1)(1/2010-1)...(1/3-1)(1/2-1)咋算
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/27 13:44:10
![(1/2012-1)(1/2011-1)(1/2010-1)...(1/3-1)(1/2-1)咋算](/uploads/image/z/978651-27-1.jpg?t=%281%2F2012-1%29%281%2F2011-1%29%281%2F2010-1%29...%281%2F3-1%29%281%2F2-1%29%E5%92%8B%E7%AE%97)
x)072045Ԅ, KOO1nTON;:
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(1/2012-1)(1/2011-1)(1/2010-1)...(1/3-1)(1/2-1)咋算
(1/2012-1)(1/2011-1)(1/2010-1)...(1/3-1)(1/2-1)咋算
(1/2012-1)(1/2011-1)(1/2010-1)...(1/3-1)(1/2-1)咋算
(1/2012-1)(1/2011-1)(1/2010-1)...(1/3-1)(1/2-1)
=(-2011/2012)(-2010/2011).(-1/2)
=-1/2012{有2012-2+1=2011个式子,所以是负的}