计算1/1x3+1/3x5+1/5x7+…+1/99x101的值
1/1x3+1/3x5+1/5x7+……+1/99x101
经典奥数题11/1x3+1/3x5+1/5x7.1/99x101解题思路请写清楚
2/1x3 + 2/3x5 + 2/5x7 +······+ 2/97x99 + 2/99x101 简便计算
计算:1/1x3+1/3x5+1/5x7+...1/2009x2011+1/2011×2013
1/1x3+1/3x5+1/5x7+.+1/1997x1999 简便计算.
计算1/1X3+1/3x5十1/5X7+.+1/2009x2011
1x1-2x2+3x3-4x4+5x5-6x6.-100x100+101x101
计算:1/1x3+1/3x5+1/5x7+1/7x9+……+1/2011x2013
1/1x3+1/3x5+1/5x7+…+1/2011x2013是多少?
1X3分之一+3X5分之一+5X7分之一…+2011X2013分之一
【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
1/1X3+1/3X5+1/5X7...1/17X19+1/19X21=