Question

Escreva a matriz A =(aij)2x3, tal que aij 2,se i=j 3, se i#J

Answer 1

$A_{ij}=\left[\begin{array}{ccc}a_{11}&a_{12}&a_{13}\\a_{21}&a_{22}&a_{23}\end{array}\right]$

$A_{ij}=\left[\begin{array}{ccc}2&3&3}\\3&2&3\end{array}\right]$