Question

4 – Dados os conjuntos A = [−3,5], B = [2,9[, C = ]− ∞,7[e D = [4,+∞[, determine:
a) A∪ B
b) B ∪C
c) A∩ B
d) C ∩ D

Answer 1

Resposta:

A) (-3, 5, 2,9)

B)( 2,9, - ∞, 7)

C) ( )

D) (- ∞ + ∞)