Question

1. Fie multimea P = ( -2 ;1/3 ;3,(3) ;+5 ;2 ;0 ;1,25). a) A= {x |x apartine P si x apartine N } b) B= {x |x apartine P si x apartine Z } c) C= {x |x apartine P si x apartine Q+ } = d) B\A = e) A intersectat cu B = f) D= {x |x apatine P si x apartine Q+\Z }=

Answer 1

1. a. A={+5;2;0} multimea numerelor naturale;
b. B={-2,+5;2;0} multimea numerelor intregi;
c. C={1/3;3,(3);+5;2;0;1,25} multimea numerelor rationale pozitive;
d. D={1/3;3,(3);1,25} multimea numerelor rationale pozitive care nu se afla in multimea numerelor intregi;