Question

dau coroana va rog ajutatima la ex incercuite.

Answer 1

14) a)A∪B={1,2,3,4,5,6,7};b)A∩B={3,5};c)A\B={1,6}
A∪B→arata elementele comune si necomune ale celor doua multimi
A∩B→arata elementele comune celor doua multimi
A\B=elem.care apartin doar lui A
⇒A={1,3,5,6}   B={2,3,4,5,7}
15) a)A∪B={a,b,c,d,e,f};b)A∩B={a,e};c)B\A={d,f}
⇒A={a,b,c,e}   B={a,d,e,f}
16)a)A∪B={x∈N/x≤8}⇔{0,1,2,3,4,5,6,7,8};b)A∩B={2,3,5};c)A∪{2,5,6}=
={0,1,2,3,5,6,7}⇒A={0,1,3,7};d)B∪{0,2,4}+{0,2,3,4,5,6,8}⇒B={3,5,6,8}
din a),b),c),d)⇒A={0,1,2,3,5,7}    b+0,2,3,4,5,6,8}