Question

Ajudem pfv, é pra hoje

Answer 1

Resposta:

$A.B=\left[\begin{array}{cc}4&1&2&3\end{array}\right] \times \left[\begin{array}{cc}3&5&-1&0\end{array}\right] = \left[\begin{array}{cc}{4.3+1.(-1)\:\:&4.5+1.0\\2.3+3.(-1)\:\:&2.5+3.0 \end{array}\right] = \left[\begin{array}{cc}11&20&3&10\\\end{array}\right]$

$B.A= \left[\begin{array}{cc}3&5&-1&0\\\end{array}\right] \times \left[\begin{array}{cc}4&1&2&3\\\end{array}\right] = \left[\begin{array}{cc}3.4+5.2&3.1+5.3\\(-1).4+0.2&(-1).1+0.3\end{array}\right] = \left[\begin{array}{cc}22&18&-4&-1\end{array}\right]$

Explicação passo-a-passo:

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