已知矩阵方程Ax+B=3C,其中
A=____.
(12
01)
,B=
(11
10)
,C=
(10
10)
,则x=___.
(-2 -1 2 0) 分析:AX=3C-B= (3 0 3 0) - (1 1 1 0) = (2 -1 2 0) 所以X=A-1 (2 -1 2 0) = (1 -2 0 1) (2 -1 2 0) = (-2 -1 2 0)
已知矩阵方程Ax+B=3C,其中
A=____.
(12
01)
,B=
(11
10)
,C=
(10
10)
,则x=___.
(-2 -1 2 0) 分析:AX=3C-B= (3 0 3 0) - (1 1 1 0) = (2 -1 2 0) 所以X=A-1 (2 -1 2 0) = (1 -2 0 1) (2 -1 2 0) = (-2 -1 2 0)