Question

Calcule o determinante de A.B, considerando as matrizes abaixo:

Answer 1

A = -2/3 4/6

A = (-2).6 + 3.4

A = -12 + 12

A = 0

B = 7/8 -9/-5

B = 7.(-5) + (-9).8

B = -35 -72

B = -107