作业帮 > 数学 > 作业

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：大师作文网作业帮 分类：数学作业 时间：2024/11/13 15:18:10
1\1x2x3+1\2x3x4+1\3x4x5+``````+1\48x49x50注：(\)为分数线(x)为乘号
1\1x2x3+1\2x3x4+1\3x4x5+``````+1\48x49x50注：(\)为分数线(x)为乘号
1/1x2x3=1/2(1/1x2-1/2x3)依次类推结果为306/1225
希望采纳
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 1/1x2x3+1/2x3x4+1/3x4x5+.+1/11x12x13= 1/1x2x3+1/2x3x4+1/3x4x5+.+1/9x10x11= 请1/1x2x3+1/2x3x4+1/3x4x5+1/4x5x6= 1/(1x2x3)+1/(2x3x4)+1/(3x4x5)+.1/(20x21x22)=?