Question

Questão 4 sendo a matriz A=[2 0 [-1] e B=
[4 1 4 ]

Answer 1

Resposta: a)$\left[\begin{array}{ccc}10&0&-5\\-20&5&20\end{array}\right]$ b) $\left[\begin{array}{ccc}6&1&-5\\-15&3&8\end{array}\right]$

Explicação passo-a-passo:

a)  5A=      $\left[\begin{array}{ccc}10&0&-5\\-20&5&20\end{array}\right]$

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

   $\left[\begin{array}{ccc}6&1&-5\\-15&3&8\end{array}\right]$

Espero ter entendido :D