Question

1. Dados A= {1, 2,3} e B= {-1 ,1} determine:

a) A x B
b) B x A

Me Ajudem ​

Answer 1

a)

AxB= {(1,-1),(1,1),(2,-1),(2,1),(3,-1),(3,1)}

b)

BxA={(-1,1),(-1,2),(-1,3),(1,1),(1,2),(1,3)}