1
-1
2
1
1
2
-1
1
2
3
1
0
-1
1
2
3
-1
0
3
5
1
-1
2
1
1
0
1
-3
0
1
0
1
-3
0
1
0
2
-6
0
1
1
-1
2
1
1
0
1
-3
0
1
0
0
0
0
0
0
0
0
0
0
r(A)=2
所以有4-2个基础解系
为k1(1
3
1
0)
k2(-1
0
0
1)
特解为(2
1
0
0)
最后特解与基础解系组合一下就是通解啦~~~
增广矩阵
=
2
-3
1
-5
1
-5
-10
-2
1
-21
1
4
3
2
1
2
-4
9
-3
-16
r1-r4,r2+5r3,r4-2r3
0
1
-8
-2
17
0
10
13
11
-16
1
4
3
2
1
0
-12
3
-7
-18
r2-10r1,r3-4r1,r4+12r1
0
1
-8
-2
17
0
0
93
31
-186
1
0
35
10
-67
0
0
93
31
-186
r4-r2,r2*(1/93)
0
1
-8
-2
17
0
0
1
1/3
-2
1
0
35
10
-67
0
0
0
0
0
r1+8r2,r3-35r2
0
1
0
2/3
1
0
0
1
1/3
-2
1
0
0
-5/3
3
0
0
0
0
0
交换行
1
0
0
-5/3
3
0
1
0
2/3
1
0
0
1
1/3
-2
0
0
0
0
0
方程组的全部解为:
(3,1,-2,0)^t
+
c(5,-2,-1,3)^t.