[2−32−1][xy]=[2−1]\left[\begin{array}{ll}2 & -3 \\2 & -1\end{array}\right]\left[\begin{array}{l}x \\y\end{array}\right]=\left[\begin{array}{c}2 \\-1\end{array}\right][22−3−1][xy]=[2−1]
[2−3−12][xy]=[2−1]\left[\begin{array}{cc}2 & -3 \\-1 & 2\end{array}\right]\left[\begin{array}{l}x \\y\end{array}\right]=\left[\begin{array}{c}2 \\-1\end{array}\right][2−1−32][xy]=[2−1]
[2−3−12][yx]=[21]\left[\begin{array}{cc}2 & -3 \\-1 & 2\end{array}\right]\left[\begin{array}{l}y \\x\end{array}\right]=\left[\begin{array}{l}2 \\1\end{array}\right][2−1−32][yx]=[21]
[2−3−12][xy]=[21]\left[\begin{array}{cc}2 & -3 \\-1 & 2\end{array}\right]\left[\begin{array}{l}x \\y\end{array}\right]=\left[\begin{array}{l}2 \\1\end{array}\right][2−1−32][xy]=[21]
