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Line 20: − c & d + − + − Its adjugate is the transpose of its cofactor matrix:adj(A)=C^T+ − + + + + + + + + + + + + + + + +
→Description
*Consider3x3 matrix <math>A=\begin{pmatrix}
*Consider3x3 matrix <math>A=\begin{pmatrix}
a_{11} & a_{12} & a_{13} \\
a_{11} & a_{12} & a_{13} \\
a_{21} & a_{22} & a_{23} \\
\end{pmatrix} </math>
a_{31} & a_{32} & a_{33}
\end{pmatrix} </math>.
*Its adjugate is the transpose of its cofactor matrix:<math>adj(A)=C^{T} =
\begin{pmatrix}
+\begin{vmatrix}
a_ {22}& a_{23} \\
a_ {32}& a_{33}
\end{vmatrix} & - \begin{vmatrix}
a_ {12}& a_{13} \\
a_ {32}& a_{33}
\end{vmatrix} & +\begin{vmatrix}
a_ {12}& a_{13} \\
a_ {22}& a_{23}
\end{vmatrix}</math>
a_{12} & a_{13} \\
a_{21} & a_{22} & a_{23} \\
a_{31} & a_{32} & a_{33}
\end{pmatrix} </math>.
==References==
==References==
*[https://en.wikipedia.org/wiki/Adjugate_matrix Adjugate matrix]
*[https://en.wikipedia.org/wiki/Adjugate_matrix Adjugate matrix]