Question

CINE IMI SPUNE SI MIE EXEMPLE DE : N,R,Z,Q ?

Answer 1

N={0,1,2,3....} Z={...-3,-2,-1,0,1,2,3....} Q={a supra b | a,b apartin Z,b diferit de 0}

Answer 2

N= {0, 1, 2, . . .}- multimea numerelor naturale;
 N∗ = {1, 2, . . .} - multimea numerelor naturale pozitive;
 Z = {0, ±1, ±2, . . .} - multimea numerelor intregi;
Q = {m/n m ∈ Z, n ∈ N∗} - multimea numerelor rationale;
      {3/2,3/5,5/2......}
R={4sqrt5 ,5sqrt2 ,68sqrt7......}