刘老师,这两个矩阵化简步骤,怎么弄?
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/08/08 01:28:07
刘老师,这两个矩阵化简步骤,怎么弄?
![](http://img.wesiedu.com/upload/4/01/401a839d38351df34d3d15ed7f0b9c66.jpg)
![](http://img.wesiedu.com/upload/e/16/e16e7a8889ba0ba00a917fcd89784aed.jpg)
![](http://img.wesiedu.com/upload/4/01/401a839d38351df34d3d15ed7f0b9c66.jpg)
![](http://img.wesiedu.com/upload/e/16/e16e7a8889ba0ba00a917fcd89784aed.jpg)
![刘老师,这两个矩阵化简步骤,怎么弄?](/uploads/image/z/15194234-2-4.jpg?t=%E5%88%98%E8%80%81%E5%B8%88%2C%E8%BF%99%E4%B8%A4%E4%B8%AA%E7%9F%A9%E9%98%B5%E5%8C%96%E7%AE%80%E6%AD%A5%E9%AA%A4%2C%E6%80%8E%E4%B9%88%E5%BC%84%3F)
1 0 3 1 2
-1 3 0 -1 1
2 1 7 2 5
4 2 14 0 6
r2+r1,r3-2r1,r4-4r1
1 0 3 1 2
0 3 3 0 3
0 1 1 0 1
0 2 2 -4 -2
r2-3r3,r4-2r3
1 0 3 1 2
0 0 0 0 0
0 1 1 0 1
0 0 0 -4 -4
r4*(-1/4),r1-r4
1 0 3 0 1
0 0 0 0 0
0 1 1 0 1
0 0 0 1 1
-->
1 0 3 0 1
0 1 1 0 1
0 0 0 1 1
0 0 0 0 0
图中不对.
再问: 老师,还有下面一张图的。
再答: r2+r1,r3-2r1,r4-3r1,r5-4r1 1 3 -1 1 0 -4 -4 -8 0 2 2 4 0 0 0 0 0 1 1 2 r1-3r5,r2+4r5,r3-2r5 1 0 -4 -5 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 2 交换行 1 0 -4 -5 0 1 1 2 0 0 0 0 0 0 0 0 0 0 0 0
-1 3 0 -1 1
2 1 7 2 5
4 2 14 0 6
r2+r1,r3-2r1,r4-4r1
1 0 3 1 2
0 3 3 0 3
0 1 1 0 1
0 2 2 -4 -2
r2-3r3,r4-2r3
1 0 3 1 2
0 0 0 0 0
0 1 1 0 1
0 0 0 -4 -4
r4*(-1/4),r1-r4
1 0 3 0 1
0 0 0 0 0
0 1 1 0 1
0 0 0 1 1
-->
1 0 3 0 1
0 1 1 0 1
0 0 0 1 1
0 0 0 0 0
图中不对.
再问: 老师,还有下面一张图的。
再答: r2+r1,r3-2r1,r4-3r1,r5-4r1 1 3 -1 1 0 -4 -4 -8 0 2 2 4 0 0 0 0 0 1 1 2 r1-3r5,r2+4r5,r3-2r5 1 0 -4 -5 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 2 交换行 1 0 -4 -5 0 1 1 2 0 0 0 0 0 0 0 0 0 0 0 0