|1/2009-1/2008|+|1/2008-1/2007|+……+|1/3-1/2|+|1/2-1|
=1/2008-1/2009+1/2007-1/2008+……+1/2-1/3+1-1/2
=1-1/2009
=2008/2009
|1/2009-1/2008|+|1/2008-1/2007|+……+|1/3-1/2|+|1/2-1|=?
1个回答
相关问题
-
1/(√2009+√2008)+1/(√2008+√2007)+.+1/(√3+√2)+1/(√2+1)
-
|1/2009-1/2008|-|1/2008-1/2007| =1/2008-1/2009-1/2007+1/2008
-
1/1*2+1/2*3+1/3*4+...+1/2007*2008+1/2008*2009
-
-(1／2009－1/2008)＋[-(1/2008-1/2007)]＋┈＋[-(1/2－1)]
-
（1-1/2008）+（2-1/2008*2）+（3-1/2008*3）+...+（2007-1/2008*2007）+
-
(1+1/2007+1/2008)*(1/2007+1/2008+1/2009)-(1+1/2007+1/2008+1/
-
1*2*3*...*2009*2010.还有：2009/2008*2008/2007*...*2/3*2/1.
-
化简：|1/2010-1/2009|+|1/2009-1/2008|+|1/2008-1/2007|-|1/2007-1
-
(1-1/2009)(1-1/2008)(1-1/2007)……（1-1/3）（1-1/2）
-
(1/2009-1)*(1/2008-1)*(1/2007-1)*……*(1/3-1)*(1/2-1)