(1 2 3 1 0 0
-1 -2 4 0 1 0
0 2 2 0 0 1)
~
(1 2 3 1 0 0
0 0 7 1 1 0
0 1 1 0 0 1/2)
~
(1 2 3 1 0 0
0 1 1 0 0 1/2
0 0 7 1 1 0 )
~
(1 0 1 1 0 -1
0 1 1 0 0 1/2
0 0 1 1/7 1/7 0 )
~
(1 0 0 6/7 -1/7 -1
0 1 0 -1/7 -1/7 1/2
0 0 1 1/7 1/7 0 )
æ以
A^(-1)=
(
6/7 -1/7 -1
-1/7 -1/7 1/2
1/7 1/7 0 )
温馨提示:答案为网友推荐,仅供参考