Question

PESSOAL, ME AJUDEM POR FAVOR NO EX DE BAIXO:

Answer 1

Resposta:

$\left[\begin{array}{ccc}-7&13\\-29&21\end{array}\right]$

Explicação passo-a-passo:

$\left[\begin{array}{cc}3&2\\1&4\end{array}\right] *\left[\begin{array}{cc}3&1\\-8&5\end{array}\right]=\\\\C_{11}=3*3+2*(-8)=-7\\C_{12}=3*1+2*5=13\\C_{21}=1*3+4*(-8)=-29\\C_{22}=1*1+4*5=21\\\\\left[\begin{array}{ccc}-7&13\\-29&21\end{array}\right]$