1/1x3+1/3x5+1/5x7+.+1/2009x2011=
1/1x3+1/3x5+1/5x7+.+1/2009x2011=
计算:1/1x3+1/3x5+1/5x7+...1/2009x2011+1/2011×2013
计算1/1X3+1/3x5十1/5X7+.+1/2009x2011
1X3分之一+3X5分之一+5X7分之一+7X9分之一加到2009X2011分之一怎么算,
【分数】1/1x3+1/3x5+1/5x7+…+1/2009x2011要清楚过程的,乘用x代替,用简便方法计算
解方程:2x/1x3+2x/3x5+……2x/2009x2011=2010
1/1x3+1/3x5+1/5x7.1/2009x2010+1/2011x2013
1/1X3+1/3X5+1/5X7...1/17X19+1/19X21=
1/1x3+1/3x5+1/5x7+1/7x9+1/9x11=?
2/1x3+2/3X5+2/5x7=2/7x9+2/9x11
1/1x3+1/3x5+1/5x7+……+1/99x101
1/1x3+1/3x5+1/5x7+…+1/2011x2013是多少?