Question

Indique os termos da terceira coluna da matriz B = (bij) 2x4 definida por bij = 2 - 3i:

a) 4 e 1
b) -1 e -4
c) 1 e 4
d) -2 e -4

Answer 1

$\large\boxed{\begin{array}{l}\sf a_{13}=2-3\cdot1=-1\\\sf a_{23}=2-3\cdot2=-4\\\huge\boxed{\boxed{\boxed{\boxed{\sf\maltese~alternativa~b}}}}\end{array}}$