Question

1 - Obter a matriz A=(aij)2x2 definida por aij = 3 i - j

Answer 1

a11= 3x1-1=2
a12=3x1-2=1
a21=3x2-1=5
a22=3x2-2=4

2 1
5 4

Answer 2

$A=(aij)2.2~$     $aij = 3 i - j$

$\left[\begin{array}{ccc}a11&a12&\\a21&a22&\end{array}\right] = \left[\begin{array}{ccc}3.1-1&3.1-2&\\3.2-1&3.2-2&\\&&\end{array}\right] = \left[\begin{array}{ccc}2&1&\\5&4&\end{array}\right]$