Question

Sejam A = [ 6 2 2 1 ] e A-¹ = [ 1/2 -1 -1 3 ]
Determinem:
a) det A
b) det A-¹
c) det (AA-¹)​

Answer 1

Resposta:

a) 6×1 - 2×2= 2

b) 1/2×3 - (-1)×(-1)= 1/2

c) 1