Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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The set subtraction law states that A - B = A ∩ B. Use the set subtraction law as well as other set identity laws such as De Morgan's law and absorbtion to prove each of the following new identities. Label each step in your proof with the set identity used to establish that step
1. A ∪ (B - A) = A ∪ B
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Step 1
We have to prove that
1. A ∪ (B - A) = A ∪ B.
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