Resposta:
b)
A= (-∞ ,4) e B={-∞ ,1)
AUB={-∞ ,4)
B∩A ={-∞ ,1)
c)
A= [-2,0] e B= [-1,+∞)
AUB=[-2 , +∞)
A∩B =[-1,0]
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Resposta:
b)
A= (-∞ ,4) e B={-∞ ,1)
AUB={-∞ ,4)
B∩A ={-∞ ,1)
c)
A= [-2,0] e B= [-1,+∞)
AUB=[-2 , +∞)
A∩B =[-1,0]