1-2^(-2008)/1-2^(-1)
1-2^(-2008)/1-2^(-1)
1/1*1+1/2*2.1/2008/2008
1/2008+2/2008+3+/2008+.+2007/2008 简算
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|+
计算(1/2+1/3+...+1/2008)*(1+1/2+...+1/2007)-(1+1/2+...+1/2008)
1、求证:1/1^2+1/2^2+1/3^2+……+1/2008^2
计算1+2+3+.+2008
数学题哈化简 |1/2010-1/2009|+|1//2009-1/2008|+|1/2008-1/2007|-|1/2
(1/2008-1)*(1/2007-1)*(1/2006-1)*...*(1/3-1)*(1/2-1)
(1/2010-1)*(1/2009-1)*(1/2008-1)*...*(1/3-1)*(1/2-1)
计算:|1/2-1|+|1/3-1/2|+|1/4-1/3|+...+|1/2009-1/2008|