Question

va rog ex 20,23!!daca nu puteti tot,e ok chiar si unul!!!am nevoie de eleva rog repede!!!


+A={x|x=6k+3,k e N},B={y|y=4p+2,p e N},aratati ca AnB=multimea vida

Answer 1

20.

A = 2, 4, 8, 16

B = 9, 27, 81

A reunit B = 2,4,8,9,16,27,81

A intersectat B = vida

A - B = A

(A-B) reunit (B inters A) = A reunit vida = A

(A reunit B ) inters (B-A) = ( A reunit B) inters B = B

diferenta simetrica = A reunit cu B