Question

Dados os Conjuntos A={3,4,5} e B={7,8,9} Determine
 
a) AxB
 
b)BxA
 
c)AxA

d) b²

Answer 1

AxB = {(3,7),(3,8),(3,9),(4,7),(4,8),(4,9),(5,7),(5,8),(5,9)}
BxA = {(7,3),(7,4),(7,5),(8,3),(8,4),(8,5),(9,3),(9,4),(9,5)}
AxA = {(3,3),(3,4),(3,5),(4,3),(4,4),(4,5),(5,3),(5,4),(5,5)}
B² = BxB = {(7,7),(7,8),(7,9),(8,7),(8,8),(8,9),(9,7),(9,8),(9,9)}