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Se dau multimile : A = ( - 2, - 1, 1 ) si B = (1 , 2). Determinati multimile A x B, B x A, A x A,si B x B

Răspuns :

Slavitescudora
A x B = {(-2,1);(-2,2);(-1,1);(-1,2);(1,1);(1,2)}
B x A = {(1,-2);(1,-1);(1,1);(2,-2);2,-1);(2,1)}
A x A = {(-2,-2);(-2-1);(-2,1);(-1,-2);(-1,-1);(-1,1);(1,-2);(1,-1);(1,1)}
B x B = {(1,1);(1,2);(2,1);(2,2)}

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