A = {4╱x EN; 3 ≤ X < 6}
B = {x³−╱x EN;2 ≤ X ≤ 5}
C = {2x+1╱x EN; 2 ≤ X < 8}
D = {3x╱ x EN; 1 ≤ X ≤ 4}
E = {4x+2╱ x EZ; 1 ≤ X ≤ 7}
F = {√2x+1 EN╱X EN; 3 < X < 13}