Question

calcule as seguintes multiplicações de matrizes .​

Answer 1

$a) </p><p> -4\begin{bmatrix}-3&6\\-2&5\end{bmatrix}=\begin{bmatrix}12&-24\\8&-20\end{bmatrix}$

$b) </p><p> 6\begin{bmatrix}2&-3\\6&-15\end{bmatrix}=\begin{bmatrix}12&-18 \\ 36&-90\end{bmatrix}$

$c) </p><p> -7\begin{bmatrix}-2&-9\\8&-13\end{bmatrix}=\begin{bmatrix}14&63\\-56&91\end{bmatrix}$