(2009/1-1)×(2008/1-1)×(2007/1-1)×.×(1001/1-1)×(1000/1-1)
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(2009/1-1)×(2008/1-1)×(2007/1-1)×.×(1001/1-1)×(1000/1-1)
2009/1指二零零九分之一.指中间还有很多数、、
2009/1指二零零九分之一.指中间还有很多数、、
![(2009/1-1)×(2008/1-1)×(2007/1-1)×.×(1001/1-1)×(1000/1-1)](/uploads/image/z/1341776-56-6.jpg?t=%EF%BC%882009%2F1-1%EF%BC%89%C3%97%EF%BC%882008%2F1-1%EF%BC%89%C3%97%EF%BC%882007%2F1-1%EF%BC%89%C3%97.%C3%97%EF%BC%881001%2F1-1%EF%BC%89%C3%97%EF%BC%881000%2F1-1%EF%BC%89)
原式=(1-1/2009)*…*(1-1/1000) (负号抵消)
=(2008/2009)*(2007/2008)*…*(1000/1001)*(999/1000)
=999/2009(2009分之999)
=(2008/2009)*(2007/2008)*…*(1000/1001)*(999/1000)
=999/2009(2009分之999)
(2009/1-1)×(2008/1-1)×(2007/1-1)×.×(1001/1-1)×(1000/1-1)
(1/2008-1)*(1/2007-1)*(2006-1).(1/1001-1)*(1/1000-1)
(1-1/2008)×(1-1/2007)×……×(1-1/1001)×(1-1/1000)
(2010/1-1)x(2009/1-1)x(2008/1-1).(1001/1-1)x(1000/1-1)=?
计算(1/2009-1)*(1/2008-1)*(1/2007-1)*……*(1/1000-1)
计算(1/2009-1)*(1/2008-1)*(1/2007-1)*.*(1/1000-1)
(1/2008-1)(1/2007-1)(1/2006-1)……(1/1001-1)(1/1000-1)
计算(2009/1-1)*(2008/1-1)*(207/1-1)*...*(1001/1-1)*(1000/1-1)
(1/2010-1)*(1/2009-1)*(1/2008-1)*…(1/1001-1)*(1/1000-1)=?1/1
简算:(2009+1/2007)*1/2008
2010分之1-1)×(2009分之1-1)×(2008分之1-1).(1001分之-1)×(1000分之1-1)
简便运算:(1-2008分之1)×(1-2007分之1)×……(1-1001分之1)×(1-1000分之1)