Question

Sejam as matrizes A= [0 1 0 2] B= [1 1 3 1]
[1 3 1 4] [1 3 3 2]
[0 1 0 5] [2 5 3 3]
[1 0 3 1] [1 1 1 1]

a) det (A+B)
b) det (A.B)

Me ajuda pf

Answer 1

A=$\left[\begin{array}{ccc}0&1\\0&2\\\end{array}\right]$ ~~> det= 0.1 - 0.2 = 0

B=$\left[\begin{array}{ccc}1&1\\3&1\\\end{array}\right]$ ~~>det= 1.3 - 1.1  = 2


a) det(A+B)
   det A + det B
     0 + 2
       2

b) det(A.B)
    detA x detB
     0 x 2
      0