Question

escreva a matriz A 2x2 onde aij=3i-2j

Answer 1

$A = \left[\begin{array}{ccc}a11&a21\\a21&a22\end{array}\right]$

AIJ = 3I - 2J

a11 = 3.1 - 2.1 = 1
a12 = 3.1 - 2.2 = -1
a21 = 3.2 - 2.1 = 4
a22 = 3.2 - 2.2 = 2

$A = \left[\begin{array}{ccc}1&-1\\4&2\end{array}\right]$