Question

矩阵计算，帮下忙

要详细过程

Answer 1

[ A | E ] =
0 -2 1 1 0 0
3 0 -2 0 1 0
-2 3 5 0 0 1
[ A | E ] =
-2 3 5 0 0 1
3 0 -2 0 1 0
0 -2 1 1 0 0
[ A | E ] =
-2 3 5 0 0 1
-6 0 4 0 -2 0
0 4 -2 -2 0 0
[ A | E ] =
-2 3 5 0 0 1
0 -9 -11 0 -2 -3
0 4 -2 -2 0 0
[ A | E ] =
-2 3 5 0 0 1
0 -9 -11 0 -2 -3
0 -36 18 18 0 0
[ A | E ] =
-2 3 5 0 0 1
0 -9 -11 0 -2 -3
0 0 62 18 8 12
[ A | E ] =
-2 3 5 0 0 1
0 -9 -11 0 -2 -3
0 0 1 9/31 4/31 6/31
[ A | E ] =
-2 3 0 -45/31 -20/31 1/31
0 -9 0 99/31 -18/31 -27/31
0 0 1 9/31 4/31 6/31
[ A | E ] =
-2 3 0 -45/31 -20/31 1/31
0 1 0 -11/31 2/31 3/31
0 0 1 9/31 4/31 6/31
[ A | E ] =
-2 0 0 -12/31 -26/31 -8/31
0 1 0 -11/31 2/31 3/31
0 0 1 9/31 4/31 6/31
[ A | E ] =
1 0 0 6/31 13/31 4/31
0 1 0 -11/31 2/31 3/31
0 0 1 9/31 4/31 6/31
A^(-1) =
6/31 13/31 4/31
-11/31 2/31 3/31
9/31 4/31 6/31