Question

me ajudem por favor !
C)Escreva a matriz

Answer 1

a11: -2 . i + 3 . j → -2 . 1 + 3 . 1 → -2 + 3 → 1
a12: -2 . i + 3 . j → -2 . 1 + 3 . 2 → -2 + 6 → 4
a21: -2 . i + 3 . j → -2 . 2 + 3 . 1 → -4 + 3 → -1
a22: -2 . i + 3 . j → -2 . 2 + 3 . 2 → -4 + 6 → 2

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