Question

Let U={-8,-7,....1,0,1,.....12}
A={x=-2<x<3}
B={x:-8<x<5}
C={x:0<x<12}
Find:
1.AUB
2.ANB
3.A
4.BNA

Answer 1

Answer on Question #77152 – Math – Discrete Mathematics

Question

Let U={-8,-7,...1,0,1,...12}

A={x=-2<x<3}

B={x:-8<x<5}

C={x:0<x<12}

Find:

1. AUB

2. ANB

3. A

4. BNA

Solution

Let N be the difference of sets, then

1) A ∪ B = {−7, −6, −5, −4, −3, −2, −1, 0, 1, 2, 3, 4}

2) A \ B = ∅

3) A = {−1, 0, 1, 2}

4) B \ A = {−7, −6, −5, −4, −3, −2, 3, 4}

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