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Se sau multimile: A= √5; 1;2 si B=- 1/2 , 1, -2

Determinati produsele carteziene pt A x A si B x B


Răspuns :

-1/2=-0,5
A={√5,1,2}
B={-0,5,1,-2}
AXA={(√5,√5),(√5,1),(√5,2),(1,√5),(1,1),(1,2),(2,√5,(2,1),(2,2)}
BxB={(-0,5;-0,5),(-0,5;1),(-0,5;-2),(1;-0,5),(1,1),(1,-2),(-2;-0,5),(-2,1),(-2,-2)}