计算1\1x2x3+1\2x3x4+1\3x4x5+``````+1\48x49x50注：(\)为分数线(x)为乘号

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/05/02 06:47:59

1\1x2x3=2x(1\1x2-1\2x3),所以：1\1x2x3+1\2x3x4+1\3x4x5+``````+1\48x49x50=2x(1\1x2-1\2x3)+2x(1\2x3-1\3x4)+`````+2x(1\48x49-1\49x50)=2(1\2-1\49x50)=1-1\49x25

计算1\1x2x3+1\2x3x4+1\3x4x5+``````+1\48x49x50注：(\)为分数线(x)为乘号 1/1x2x3+1/2x3x4+1/3x4x5+1/4x5x6+.+1/48x49x50= 1/2x3x4+1/3x4x5+1/4x5x6+……+1/48x49x50= 1/1x2x3+1/2x3x4+1/3x4x5 1x2X3+2x3X4+3x4X5+…+7X8X9=? 1x2x3+2x3x4+3x4x5+…+8x9x10 1x2x3+2x3x4+3x4x5+...+7x8x9=, 1x2x3+2x3x4+3x4x5+.+10x11x12 有理数:1.计算:1/1x2x3+1/2x3x4+1/3x4x5+...+1/98x99x1002.求式子:|x+1|+ 数学简便计算1/1x2x3+1/2x3x4+1/3x4x5……+1/20x21x22=? 1/1x2x3+1/2x3x4+1/3x4x5+.+1/11x12x13= 1/1x2x3+1/2x3x4+1/3x4x5+.+1/9x10x11=