Question

Fie A={1;$\sqrt{5}$;$-\sqrt{16}$;$\sqrt{0,4}$;0;$\sqrt{1003}$}
Determinati multimile:
a) A ∩ Z;
b)A∩Q;
c)A\N;
d)N∩A

Answer 1

a) A ∩ Z = {-√16; 0; 1}
b) A ∩ Q = {-√16; √0,4; 1; 0}
c) A \ N = {-√16; √0,4; √5; √1003}
d) N ∩ A = {0; 1}