(1-1/2^)(1-1/3^)……(1-1/2007^)(1-1/2008^)
(1-1/2^)(1-1/3^)……(1-1/2007^)(1-1/2008^)
(1/2008-1)(1/2007-1)(1/2006-1)…(1/3-1)(1/2-1)
(1)1×2分之1 + 2×3分之1 + … +2007×2008分之1
1、(1/2+1/3+……1/1007)*(1+1/2+……1/2006)-(1+1/2+……+1/2007)*(1/2
|1-1/2|+|1/2-1/3|+|1/3-1/4|+……|1/2007-1/2008|=?
2008+2007+2006…+3+2+1
计算:(1/2009-1)(1/2008-)(1/2007-1)……(1/3-1)(1/2-1)
数学-(1/2008-1)(1/2007-1)(1/2006-1)…(1/3-1)(1/2-1)给我算式!
找规律计算:(-1×1/2)+(-1/2×1/3)+(-1/3×1/4)+…+(-1/2007×1/2008)
巧算1/2*1/3+1/3*1/4+1/4*1/5+……+1/2006*1/2007+1/2007*1/2008
(1/2009-1)(1/2008-1)(1/2007-1)……(1/3)(2/1)计算
计算题1-1/2-1/3+1/4+1/5-1/6-1/7+1/8+1/9……-1/2006-1/2007+1/2008+