二階、三階矩陣求逆

矩陣 A = ( a 11 a 12 a 13 a 21 a 22 a 23 a 31 a 32 a 33 ) A = \begin{pmatrix} a_{11} & a_{12} & a_{13}\\ a_{21}& a_{22} & a_{23}\\ a_{31}& a_{32} & a_{33} \end{pmatrix} A=⎝⎛​a11​

>>阅读原文<<