Question

Daca A={x apartine Z* | x=|x| si x_<3} atunci A={....}

Answer 1

x=|x| => x∈[0, ∞) ∩ Z  (1)

x<3 => x∈(-∞, 3) ∩ Z (2)

Din (1) ∩ (2) => x = [0, 3) ∩ Z

=>  A = {0,1,2}