Question

Dada a matriz abaixo determine.
Olhem a foto da questão ai, me ajudem.

Answer 1

$\mathsf{A= \left[\begin{array}{ccc}a_{11}&a_{12}&a_{13}\\a_{21}&a_{22}&a_{23}\\a_{31}&a_{32}&a_{33}\end{array}\right] }\\\\\\ \mathsf{A= \left[\begin{array}{ccc}2&3&10\\3&0&1\\6&7&8\end{array}\right]}$


c)

$\mathsf{a_{11}+a_{22}+a_{33}=2+0+8}\\\\ \mathsf{\boxed{a_{11}+a_{22}+a_{33}=10}}$


d)

$\mathsf{a_{31}+a_{22}+a_{13}=6+0+10}\\\\ \mathsf{\boxed{a_{31}+a_{22}+a_{13}=16}}$