Question

ESCOLHA A ALTERNATIVA CORRETA (resposta séria por favor)

Answer 1

Resposta:

alternativa

(a) (39 1)

(7 -2)

Answer 2

Resposta: letra a)

$A=\left[\begin{array}{ccc}1&7\\-2&3\\\end{array}\right] B= \left[\begin{array}{ccc}4&1\\5&0\\\end{array}\right] --> A.B= \left[\begin{array}{ccc}1.4+7.5 &1.1+7.0\\-2.4+3.5&-2.1+3.0\\\end{array}\right] = AB=\left[\begin{array}{ccc}39&1\\7&-2\\\end{array}\right]$