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Marinela800
a fost răspuns

1 Aflati nr A=acolada x∈∩/1 B=acolada x∈∩/1 2 calculati AUB A∩B A-B B-A
A=acolada 1 2 3 5 INCHIDEM ACOLADA
B=acolada 0 2 4 6 indem acolada
C= Acolada 1 3 7 9 8 6 inchidem acolada AUB AUC BUC A∩B A∩ C B∩C AUB∩ C A-B B-C B-C A-C A-A
3 rezolvati A=acolada x∈∩/x<5 inchidem acolada
B=acolada x∈∩/ 3 C=acolada 0 1 2 4 5 6 9 inchidem acolada
(A-B) U (B-A)
A∩ B∩C B-C C-A B-A B∩ AUB


VA ROOOG REPEDE DAU COROANA


Răspuns :

1) A= N-{ 1}
    B = N -{1} 
AUB =N - {1) 
A intersectat B =N -{ 1}
A - B =multimea vida
B - A = multimea vida

2)
 A={1,2,3,5}
 B ={0,2,4,6}
 C ={1,3,7,9.8.6}
AUB ={0,1,2,3,4,5,6}
AUC ={ 1,2,3,5,6,7,8.9}
BUC ={0,1,2,3,4,6,7,8,9}
A intersectat B ={2}
A intersectat C ={1,3}
B intersectat C ={6}
AUB intersectat C ={0,1,2,3,4,5,6}intersectat C ={1,3,6}
A -B ={1,2,3,5}
B -C ={ 0,2 4}
A - C ={2,5}
A - A =multimea vida


3)  
A ={xeN ,I x<5}   =>x=0,1,2,3,4
A ={0,1,2,3,4}
B =N -{3} 
C ={ 0,1,2,4,5,6,9}
(A-B) U(B-A)={3} U(N-{0,1,2,3,4}) =N-{0,1,2,4}
A intersectat B intersectat C ={ 0,1,2,4}
B - C =N - {0,1,2,3,4,5,6,9}
C -A ={5,6,9}
B -A =N -{0,1,2,3,4}
B intersectat AUB =B intersectat N = N-{3}







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