Podaj elementy zbioru AυB.
a) A= {1,2,3,4}, B = {3,4,5}
AυB = ....................
b) A= {11,12,13}, B = {√121,√144,√196}
AυB = ....................
C) A = {x ∈ C : x² ≤ 1}, B= {x ∈ C : x² ≤ 4}
AυB = ....................