Question

Alguém me ajuda nesses exercícios de matrizes urgente??

Answer 1

LETRA C

$\left[\begin{array}{ccc}1&-1\\0&3\end{array}\right] - 2* \left[\begin{array}{ccc}4&3\\6&2\end{array}\right] =$

$\left[\begin{array}{ccc}1&-1\\0&3\end{array}\right] - \left[\begin{array}{ccc}8&6\\12&4\end{array}\right] = \left[\begin{array}{ccc}(1-8)&(-1 - 6)\\(0 - 12)&(3 - 4)\end{array}\right] = \left[\begin{array}{ccc}-7&-7\\-12&-1\end{array}\right]$


LETRA D


$\left[\begin{array}{ccc}4&1\\2&-3\end{array}\right] + 4* \left[\begin{array}{ccc}1&0\\0&-1\end{array}\right] - \left[\begin{array}{ccc}2&3\\4&5\end{array}\right] =$

$\left[\begin{array}{ccc}4&1\\2&-3\end{array}\right] + \left[\begin{array}{ccc}4&0\\0&-4\end{array}\right] - \left[\begin{array}{ccc}2&3\\4&5\end{array}\right]$

$\left[\begin{array}{ccc}(4 + 4 - 2)&(1 + 0 - 3)\\(2 + 0 - 4)&(-3 -4 -5)\end{array}\right] = \left[\begin{array}{ccc}6&-2\\-2&-12\end{array}\right]$