Question

Determine a matriz e depois identifique seus elementos ​

Answer 1

$A=(a_{ij})_{2\times3}\ \to\ A=\left[\begin{array}{ccc}a_{11}&a_{12}&a_{13}\\a_{21}&a_{22}&a_{23}\end{array}\right]$

$\boxed{a_{ij}=i^2+j^2}$

$a_{11}=1^2+1^2=1+1\ \to\ \boxed{a_{11}=2}$

$a_{12}=1^2+2^2=1+4\ \to\ \boxed{a_{12}=5}$

$a_{13}=1^2+3^2=1+9\ \to\ \boxed{a_{13}=10}$

$a_{21}=2^2+1^2=4+1\ \to\ \boxed{a_{21}=5}$

$a_{22}=2^2+2^2=4+4\ \to\ \boxed{a_{22}=8}$

$a_{23}=2^2+3^2=4+9\ \to\ \boxed{a_{23}=13}$

$\boxed{A=\left[\begin{array}{ccc}2&5&10\\5&8&13\end{array}\right]}$