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Fie A(x∈R/-3(aceelasi semn cel dupa x doar ca fara egal)x≤5)
B=(x∈R/x≥0)
Efectuati A∪B,A∩B,A/(INVERS)B,B/(invers)A.


Răspuns :

-3 < x ≤ 5⇒A = (-3; 5]
B= [0;+∞)

A U B= (-3;+∞)
A n B = [0;5]
A\B= (-3;0)
B\A= (5;+∞)
-3<x≤5⇔A=(-3;5]
B= [0,∞)

AUB= (-3,∞)
A∩B=[0;5]
A\B=(-3,0)
B\A=(5,∞)