(1/2012-1)*(1/2011-1)*(1/2010-1).*(1/1000-1)
(1/2012-1)*(1/2011-1)*(1/2010-1).*(1/1000-1)
(1/2012-1)*(1/2011-1)*(1/2010-1)*⋯*(1/1000-1)=
(1-1/2009+1/2010+1/2011) ×(1/2009+1/2010+1/2011+1/2012)-(1+1
(2012/1-1)×(2011/1-1)×(2010/1-1)×……×(1001/1-1)×(1000/1-1)
|1/2013-1/2012|+ |1/2012-1/2011|+|1/2011-1/2010|-|1/2010-1/2
计算:(1/2012-1)×(1/2011-1)×(1/2010-1)×(1/2009-1)×...×(1/2011-1
(2012+1/2011)/(2011+1/2012)+(2010+1/2011)/(2011+1/2010)的简便方法
(1/2012-1)*(1/2011-1)*(1/2010-1)*……*(1/1001-1)*(1/1000-1)
(2012/1-1)×(2011/1-1)×(2010/1-1)×……×(1001/1-1)×(1000/1-1)
(2012/1-1)×(2011/1-1)×(2010/1-1)×……×(1001/1-1)×(1000/1-1) 这道
[2012分之1-1】*【2011分之1-1】*【2010分之1-1】*...*【1001分之1-1】*【1000分之1
(2012/1-1)*(2011/1-1)*(2010/1-1)*(2009/1-1)*(2008/1-1)*```*(