Question

数学高手帮忙看下这个逆矩阵怎么求?在线等

Answer 1

解析：1 2 3 1 0 0 1 1 0 0 0 1

4 5 6 0 1 0--- 1 2 3 1 0 0

1 1 0 0 0 1 4 5 6 0 1 0

1 1 0 0 0 1 1 1 0 0 0 1 1 1 0 0 0 1

---- 0 1 3 1 0 -1----0 1 3 1 0 -1---0 1 0 2 -1 2

0 1 6 0 1 -4 0 0 3 -1 1 -3 0 0 1 -1/3 -1

1 0 0 -2 1 -1

--- 0 1 0 2 -1 2 .

0 0 1 -1/3 -1

所以逆矩阵为 -2 1 -1

2 -1 2

1 -1/3 -1