Question

3.
Alguns pāres ordenados de AB são (-2, 4), (0,5) e (-2,-4), e n(AB) = 6. Determine, enumerando os
elementos,
a) A.
b) B.
c) B.A.
d) A^2
​

Answer 1

Resposta:

n(ab) = 6 pares

a) A = {-2,0}

b)B = {-4,4,5}

c) B * A = {(-4,-2),(-4,0),(4,-2),(4,0),(5,-2),(5,0)} // 6 Pares

d) A^2 = A * A = {(-2,-2),(-2,0),(0,-2),(0,0)} // n(a^2) = 4 pares