determinan matriks A= [tex] \left[\begin{array}{ccc}1&2\\-1&-3\\\end{array}\right] [/tex]

Bab Matriks

a = 1
b = 2
c = -1
d = -3

Determinan
= ad - bc
= (1)(-3) - (2)(-1)
= -3 + 2
= -1

determinan
det = a x d - b x c
      = ( 1 x -3) - ( 2 x - 1)
      = - 3 - ( - 2)
      = - 3 + 2
      = -1