Question

Me ajudem porfavor nessa questão de Matriz.

Answer 1

Resposta:

Multiplicamos linha por coluna.

$\left[\begin{array}{cc}2&3\\-2&4\\6&7\end{array}\right] . \left[\begin{array}{c}2\\0\end{array}\right] = \left[\begin{array}{c}2.2+3.0\\-2.2+4.0\\6.2+7.0\end{array}\right] = \left[\begin{array}{c}4\\-4\\12\end{array}\right]$