Question

Escreva a matriz quadrada de ordem 2 cujo elemento numérico aí=4i-2j+3

Answer 1

$A= \left[\begin{array}{ccc}a_{11}&a_{12}\\a_{21}&a_{22}\\\end{array}\right] \\ \\ \\ a_{11}=4i-2j+3=4*1-2*1+3=4-2+3=5 \\ a_{12}=4i-2j+3=4*1-2*2+3=4-4+3=3 \\ a_{21}=4i-2j+3=4*2-2*1+3=8-2+3={9} \\ a_{22}=4i-2j+3=4*2-2*2+3=8-4+3=7 \\ \\ \boxed{\boxed{A= \left[\begin{array}{ccc}5&3\\9&7\\\end{array}\right]}}$