(1-2/1)*(1-3/1)*(1-4/1)*.*(1-2007/1)*(1-2008/1)
(1/2008-1)(1/2007-1)(1/2006-1)…(1/3-1)(1/2-1)
(1-1/2^)(1-1/3^)……(1-1/2007^)(1-1/2008^)
(1+1/2)*(1+1/4)*(1+1/6)*...*(1+1/2008)*(1-1/3)*(1-1/5)*(1-1/
计算(1/2+1/3+...+1/2008)*(1+1/2+...+1/2007)-(1+1/2+...+1/2008)
1 1 1 1 1(1- -)(1- -)(1- -)...(1- - )(1- - )=?2 3 4 2007 200
(-1×1/2)+(-1/2×1/3)+(-1/3×1/4)+…+(-1/2008×1/2009)
找规律计算:(-1×1/2)+(-1/2×1/3)+(-1/3×1/4)+…+(-1/2007×1/2008)
(1-2/1)+(2/1-3/1)+(3/1-4/1)+.+(2007/1-2008/1)这道题怎么做
(2009/1-1)×(2008/1-1)×(2007/1-1)×.×(1001/1-1)×(1000/1-1)
数学-(1/2008-1)(1/2007-1)(1/2006-1)…(1/3-1)(1/2-1)给我算式!
计算;(1/2008-1)(1/2007-1)(1/2006-1).(1/3-1)(1/2-1)=
计算2009*(1-1/2009)*(1-1/2008)*(1-1/2007)*.*(1-1/2)