Matriz Inversa 4x4 de 1111/2112/0032/0011.
Soluções para a tarefa
Resposta:
A=
1 1 1 1
2 1 1 2
0 0 3 2
0 0 1 1
1 1 1 1 | 1 0 0 0
2 1 1 2 | 0 1 0 0
0 0 3 2 | 0 0 1 0
0 0 1 1 | 0 0 0 1
L2=L2-2L1
L3=L3-3L4
1 1 1 1 | 1 0 0 0
0 -1 -1 0 | -2 1 0 0
0 0 0 -1 | 0 0 1 -3
0 0 1 1 | 0 0 0 1
L4=L4+L3
L1=L1+L2
1 0 0 1 | -1 1 0 0
0 -1 -1 0 | -2 1 0 0
0 0 0 -1 | 0 0 1 -3
0 0 1 0 | 0 0 1 -2
L2=L2+L4
L1=L1+L3
1 0 0 0 | -1 1 1 -3
0 -1 0 0 | -2 1 1 -2
0 0 0 -1 | 0 0 1 -3
0 0 1 0 | 0 0 1 -2
L4<>L3
1 0 0 0 | -1 1 1 -3
0 -1 0 0 | -2 1 1 -2
0 0 1 0 | 0 0 1 -2
0 0 0 -1 | 0 0 1 -3
L2=(-1)*L2
L4=(-1)*L4
1 0 0 0 | -1 1 1 -3
0 1 0 0 | 2 -1 -1 2
0 0 1 0 | 0 0 1 -2
0 0 0 1 | 0 0 -1 3
A^(-1) =
-1 1 1 -3
2 -1 -1 2
0 0 1 -2
0 0 -1 3