Question

请大家帮忙做一下求逆矩阵的题目

求一下矩阵的逆矩阵 1 3 6 2 4 3 3 2 4

Answer 1

(A,E)
=
1
3
6
1
0
0
2
4
3
0
1
0
3
2
4
0
0
1
r2-2r1,
r3-3r1
得
1
3
6
1
0
0
0
-2
-9
-2
1
0
0
-7
-14
-3
0
1
r3-4r2
1
3
6
1
0
0
0
-2
-9
-2
1
0
0
1
22
5
-4
1
r2+2r3
1
3
6
1
0
0
0
0
35
8
-7
2
0
1
22
5
-4
1
r2*(1/35),
r2<->r3
1
3
6
1
0
0
0
1
22
5
-4
1
0
0
1
8/35
-7/35
2/35
r1-6r3,
r2-22r3
1
3
0
-13/35
42/35
-12/35
0
1
0
-1/35
14/35
-9/35
0
0
1
8/35
-7/35
2/35
r1-3r2
1
0
0
-2/7
0
3/7
0
1
0
-1/35
2/5
-9/35
0
0
1
8/35
-7/35
2/35
逆矩阵就是后面那个3*3的.
满意请采纳
^-^.