Set Union/Examples/2 Arbitrarily Chosen Sets of Complex Numbers

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Example of Set Union

Let:

\(\displaystyle A\) \(=\) \(\displaystyle \set {3, -i, 4, 2 + i, 5}\)
\(\displaystyle B\) \(=\) \(\displaystyle \set {-i, 0, -1, 2 + i}\)

Then:

$A \cup B = \set {3, -i, 0, -1, 4, 2 + i, 5}$


Sources