Question

construir as matrizes A(aij)2×2 / aij= i+3j e B (bij) 2×2 / Bin = 3i + 2j

Answer 1

$A\;=\;\left[\begin{array}{ccc}a_{_{11}}&a_{_{12}}\\a_{_{21}}&a_{_{22}}\end{array}\right] \\\\\\A\;=\;\left[\begin{array}{ccc}1+3\,.\,1&1+3\,.\,2\\2+3\,.\,1&2+3\,.\,2\end{array}\right] \\\\\\A\;=\;\left[\begin{array}{ccc}4&7\\5&8\end{array}\right]$

$B\;=\;\left[\begin{array}{ccc}b_{_{11}}&b_{_{12}}\\b_{_{21}}&b_{_{22}}\end{array}\right] \\\\\\B\;=\;\left[\begin{array}{ccc}3\,.\,1+2\,.\,1&3\,.\,1+2\,.\,2\\3\,.\,2+2\,.\,1&3\,.\,2+2\,.\,2\end{array}\right] \\\\\\B\;=\;\left[\begin{array}{ccc}5&7\\8&10\end{array}\right]$