Question

Calculati:
a){2.0.1.3}u in jos {2,1,0,5}
b){3,1,2}u {2,0,3}
c){3,0,1,2}u in josN*
d){2,0,1,3}-N*
explica cum ai facut
dau si cel mai bun rasuns

Answer 1

a){0,1,2,3,5}
b){0,1,2,3}
c){0,1,2,3}
d){0}
U -reuniune=elemente in  total si din prima multime si din a doua ,dar fara a se repeta
U in jos-intersectie,elemente care se repeta in ambele multimi .Ex. {1,2,4}U in jos{1,4}     {1,4}
N -multimea numerelor naturale
N cu steluta-multimea numerelor naturale fara 0