计算:(1/2006-1)*(1/2005-1)*(1/2004-1)*.*(1/3-1)*(1/2-1))

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计算:(1/2006-1)*(1/2005-1)*(1/2004-1)*.*(1/3-1)*(1/2-1))计算:(1/2006-1)*(1/2005-1)*(1/2004-1)*.*(1/3-1)*

计算:(1/2006-1)*(1/2005-1)*(1/2004-1)*.*(1/3-1)*(1/2-1))
计算:(1/2006-1)*(1/2005-1)*(1/2004-1)*.*(1/3-1)*(1/2-1))

计算:(1/2006-1)*(1/2005-1)*(1/2004-1)*.*(1/3-1)*(1/2-1))
给答案你不好吧.给你提示好了,通分再约掉,很简单.

1/2006

(-2005/2006)*(-2004/2005)(-2003/2004)…(-2/3)(-1/2)=-1/2006,共2005项,所以为负值。除第一和最后项前项分子分母都可以消掉。