Question

Dadas as matrizes abaixo determine as operações que se pede:

Answer 1

A + B 
$\left[\begin{array}{ccc}2&10&-7\\0&0&7\\8&7&7\end{array}\right]$

B - A
$\left[\begin{array}{ccc}-18&4&-7\\-10&-8&-5\\18&5&-7\end{array}\right]$

2A - B
$\left[\begin{array}{ccc}12&-1&-7\\5&4&11\\-23&-4&14\end{array}\right]$