Question

Calculați: A U B; A n B; A - B; B - A dacă:

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Answer 1

Răspuns:

a)

A={4,5,6}

B={-3,-2,-1,0,1,2}

AUB={-3,-2,-1,0,1,2,4,5,6}

AnB=mulțime vida

A-B={4,5,6}=A

B-A={-3,-2,-1,0,1,2}=B

b)

A={0,1,2,3,4}

B={-3,-2,-1,0,1,2,3,4}

AUB={-3-2-1,0,1,2,3,4}=B

AnB={0,1,2,3,4}=A

A-B=mulțime vidă

B-A={-3,-2,-1}