计算1/1x4+1/4x7+1/7x10+.+1/2002x2005+1/2005x2008
计算1/1x4+1/4x7+1/7x10+.+1/2002x2005+1/2005x2008
1/1X4+1/4X7+1/7X10+.+1/2002X2005=?
1/1x4+1/4x7+1/7x10+……+1/2005x2008
1X4/1+4X7/1+7X10/1+…+2005X2008/1=?
计算1/1x4+1/4x7+1/7x10+***+1/2007x2010
计算:1x4分之一+4x7分之一+7x10分之一+10x13分之一+13x16分之一
计算 1X4分之一+4x7分之一+7x10分之一+...+2008x2011分之一的值
100x( 3/1x4 + 3/4x7 +3/7x10 +.3/97x100)=?注:1x4、4x7、7x10等均为分母
x6+x5+x4+x3+x2+x+1=0,求x2003+x2004+x2005+x2006+x2007+X2008=?
有理数的计算(1)1/1x4+1/4x7+1/7x10+...+1/2008x2011+1/2011x2014
1/1x4+1/4x7+1/7x10+1/10x13+1/13X16 简便
1/1X4+1/4X7+1/7X10+...+1/100X103=