演習問題

${\displaystyle \left(\begin{array}{cc}2& 6\\ 4& 3\end{array}\right)-\left(\begin{array}{cc}3& 4\\ 1& 5\end{array}\right)}$

${\displaystyle 3\left(\begin{array}{ccc}\begin{array}{c}4\\ 0\end{array}& \begin{array}{c}2\\ 5\end{array}& \begin{array}{c}-3\\ -1\end{array}\end{array}\right)-2\left(\begin{array}{ccc}\begin{array}{c}3\\ 4\end{array}& \begin{array}{c}1\\ -1\end{array}& \begin{array}{c}-2\\ 0\end{array}\end{array}\right)}$