Question

F Fie multimile A=3,4,5), B={5,6,7,8). Aflati: B AUB= AB= A-B=
Repede:)
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Answer 1

AUB= {3,4,5,6,7,8}

A-B={3,4}

AB={(3,5), (3,6), (3,7), (3 8), (4,5),(4,6), (4,7), (4,8), (5,5), (5,6), (5,7), (5,8)}

Answer 2

$\it A=\{3,\ 4,\ 5\}\\ \\ B=\{5,\ 6,\ 7,\ 8\}\\ \\ A\cup B=\{3,\ 4,\ 5,\ 6,\ 7,\ 8\}\\ \\ A\cap B=\{5\}\\ \\ A\ -\ B=\{3,\ 4\}$