(1/2009-1)*(1/2008-1)*(1/2007-1)…(1/1000-1)=?
计算(1/2009-1)*(1/2008-1)*(1/2007-1)*……*(1/1000-1)
(2009\1-1)(2008\1-1)(2007\1-1).(1000\1-1)
化简:|1/2010-1/2009|+|1/2009-1/2008|+|1/2008-1/2007|-|1/2007-1
(2009/1-1)×(2008/1-1)×(2007/1-1)×.×(1001/1-1)×(1000/1-1)
|1/2009-1/2008|+|1/2008-1/2007|+|1/2007-1/2006|-|1/2006-1/20
1/2009-1/2008|+|1/2008-1/2007|+|1/2007-1/2006|+.+|1/3-1/2|+|
|2009/1-2008/1|+|2008/1-2007/1|+|2007/1-2006/1|+.+|3/1-2/1|+
(1+1/2007+1/2008)*(1/2007+1/2008+1/2009)-(1+1/2007+1/2008+1/
计算:|1/2008-1/2007|+|1/2009-1/2008|+|1/2010-1/2009|-|1/2010-1
数学题:(1/2009-1)x(1/2008-1)x(1/2007-1)x...x(1/1001-1)x(1/1000-
(1/2010-1)*(1/2009-1)*(1/2008-1)*…(1/1001-1)*(1/1000-1)=?1/1
(1/2009-1)x(1/2008-1)x(1/2007-1)x.x(1/1001-1)x(1/1000-1)=