(1/1009-1)*(1/1010-1)*...*(1/2013-1)*(1/2014-1)=多少
问题描述:
(1/1009-1)*(1/1010-1)*...*(1/2013-1)*(1/2014-1)=多少
答
(1/1009-1)*(1/1010-1)*...*(1/2013-1)*(1/2014-1)=(1-1/1009)*(1-1/1010)*...*(1-1/2013)*(1-1/2014)=1008/1009x1009/1010x.x2012/2013x2013/2014=1008/2014=504/1007手机提问的朋友在客户端右上角评价点【满...