求(1/2001-1)*(1/2000-1)*(1/1999-1)*…(1/1001-1)*(1/1000-1)的值
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求(1/2001-1)*(1/2000-1)*(1/1999-1)*…(1/1001-1)*(1/1000-1)的值
求(1/2001-1)*(1/2000-1)*(1/1999-1)*…(1/1001-1)*(1/1000-1)的值
求(1/2001-1)*(1/2000-1)*(1/1999-1)*…(1/1001-1)*(1/1000-1)的值
(1/2001-1)*(1/2000-1)*(1/1999-1)=
-2001/1998=-667/666
(1/1001-1)*(1/1000-1)=1
你把题出错了吧,如果猜得不错的话,楼主是想让答案为1或-1吧.