Zdroj TeX:

\small (\begin{array}{} x' & y' \end{array} )=\left( \begin{array}{} x & y \end{array} \right) ·\left( \begin{array}{} a & c \\ b & d \\ \end{array} \right)+\left( \begin{array}{} 1 & -2\end{array} \right)