矩阵显示不正常[21[-2 -1[-23 -2 3] X 1 1]= -6 1]这是 AXB=C 的形式X = A^-1CB^-1.A^-1 = 3/8 -1/81/41/4 B^-1 =-1 -112X =A^-1CB^-1 = 1234