Question

Dadas as matrizes  A=(aij)2x3, com aij=i+2j e que B$\left[\begin{array}{ccc}3&5&7\\4&b&a\\\end{array}\right]$
Calcule:(a-b)², sabendo que A=B

Answer 1

$\left \{\left[\begin{array}{ccc}3&5&7\\4&6&8\end{array}\right] - \left[\begin{array}{ccc}3&5&7\\4&6&8\end{array}\right] \left \} ^{2} \\ \left[\begin{array}{ccc}3-3&5-5&7-7\\4-4&6-6&8-8\end{array}\right] ^{2}$
$\left[\begin{array}{ccc}0&0&0\\0&0&0\end{array}\right] ^{2} -> 0$