Question

poderiam responder essas 2 questões pra mim por favor

Answer 1

A resolução da questão 36:
Letra a
A={-2,-1,0,1,2,3,4,5,6}
B={2,3,4}
AUB={-2,-1,0,1,2,3,4,5,6}
A∩B={2,3,4}
A-B={-3,-2,-1,0,1,5,6,7}
B-A={ }

Letra b
A={-1,6}
B={1,+∞}
AUB={-1,1,6,+∞}
A∩B={6}
A-B={-1}
B-A={1,2,3,4,5,7,+∞}

Letra c

A={-3,-2,-1,0,1}
B={2,5}
AUB={-3,-2,-1,0,1,2,5}
A∩B=∅
A-B={-3,-2,-1,0,1}
B-A={2,5}

38. Letra a