观察下列等式:1X2=1/3X1X2X3;1X2+2X3=1/3X2X3X4;1X2+2X3+3X4=1/3X3X4X5;根据以上规律,请你写出第n个式子(n》=1)谢谢,比较急,明天交
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/21 02:57:36
![观察下列等式:1X2=1/3X1X2X3;1X2+2X3=1/3X2X3X4;1X2+2X3+3X4=1/3X3X4X5;根据以上规律,请你写出第n个式子(n》=1)谢谢,比较急,明天交](/uploads/image/z/2710240-16-0.jpg?t=%E8%A7%82%E5%AF%9F%E4%B8%8B%E5%88%97%E7%AD%89%E5%BC%8F%EF%BC%9A1X2%3D1%2F3X1X2X3%3B1X2%2B2X3%3D1%2F3X2X3X4%3B1X2%2B2X3%2B3X4%3D1%2F3X3X4X5%3B%E6%A0%B9%E6%8D%AE%E4%BB%A5%E4%B8%8A%E8%A7%84%E5%BE%8B%2C%E8%AF%B7%E4%BD%A0%E5%86%99%E5%87%BA%E7%AC%ACn%E4%B8%AA%E5%BC%8F%E5%AD%90%EF%BC%88n%E3%80%8B%3D1%EF%BC%89%E8%B0%A2%E8%B0%A2%2C%E6%AF%94%E8%BE%83%E6%80%A5%2C%E6%98%8E%E5%A4%A9%E4%BA%A4)
x){Ovt?|m=2057 @RHEt LDSgv>]d';^,oy[O.x6ik=ٱ
hӵ{mk~O
H)/5?kXlF%+ZbT?P.M3lBP,ˋ iۛiH#M<;lC-^-CL Odn I#
观察下列等式:1X2=1/3X1X2X3;1X2+2X3=1/3X2X3X4;1X2+2X3+3X4=1/3X3X4X5;根据以上规律,请你写出第n个式子(n》=1)谢谢,比较急,明天交
观察下列等式:1X2=1/3X1X2X3;1X2+2X3=1/3X2X3X4;1X2+2X3+3X4=1/3X3X4X5;根据以上规律,请你写出第n个式子
(n》=1)谢谢,比较急,明天交
观察下列等式:1X2=1/3X1X2X3;1X2+2X3=1/3X2X3X4;1X2+2X3+3X4=1/3X3X4X5;根据以上规律,请你写出第n个式子(n》=1)谢谢,比较急,明天交
1X2+2X3+...nX(n+1)=1/3XnX(n+1)X(n+2)
1*2+2*3+3*4..........n*(n+1)=1/3*n*(n+1)*(n+2)