Question

Jika x adalah matriks ordo 2×2 memenuhi persamaan matriks X (0 1 -1 2) = (3 -1 -6 8) nilai determinan |x| =

Answer 1

XA=B
X=B.Ainvers1
X=(3 -1 -6 8).(2 -1 1 0)1/1
X=(5 -3 10 -6).1/1
X=(5 -3 10 -6)
Det |x|= 5.-6 - 10.-3
= -30 - (-30)
= -30 + 30
= 0