Set Union/Examples/3 Arbitrarily Chosen Sets of Complex Numbers

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Example of Set Union

Let:

\(\displaystyle A\) \(=\) \(\displaystyle \set {1, i, -i}\)
\(\displaystyle B\) \(=\) \(\displaystyle \set {2, 1, -i}\)
\(\displaystyle C\) \(=\) \(\displaystyle \set {i, -1, 1 + i}\)

Then:

$\paren {A \cup B} \cup C = \set {2, 1, -i,1, 1 + i}$


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