Question

DETERMINE A∪B, QUANDO:

A) A= {X ∈ |R | -4< X ≤ 1} e B= {X ∈ |R | 2 ≤ X ≤3}

B) A= {X ∈ |R | 2< X < 5} e B= {X ∈ |R | 1< X < 4}

Answer 1

A) A=(-3,-2,-1,0,1) B=(2,3)

AUB= (-3,-2,-1,0,1,2,3)

B) A=(3,4) B=(2,3)

AUB=(2,3,4)