Question

Dadas as matrizes:

A= [ 2 3] B= [1 5 4]
[1 3] e [2 -2 3]
[7 2]

Calcule AB e BA

Answer 1

$A=\begin{bmatrix}2&3\\1&3\\7&2\end{bmatrix}$

$B=\begin{bmatrix}1&5&4\\2&-2&3\end{bmatrix}$

$A.B=\begin{bmatrix}8&16&-1\\7&11&-5\\11&39&22\end{bmatrix}$

$B.A=\begin{bmatrix}35&26\\-15&6\end{bmatrix}$