Question

Sendo A=(aij)2x3 escrva a matriz tal que aij=2i-j

Answer 1

$A= \left[\begin{array}{ccc}a_{11}&a_{12}&a_{13}\\a_{21}&a_{22}&a_{23}\end{array}\right] \\ \\ \\ A= \left[\begin{array}{ccc}2.1-1&2.1-2&2.1-3\\2.2-1&2.2-2&2.2-3\end{array}\right] \\ \\ A= \left[\begin{array}{ccc}1&0&-1\\3&2&1\end{array}\right]$