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Question
If z is a complex number, then
Options
\[\left| z \right|^2 > \left| z \right|^2\]
\[\left| z \right|^2 = \left| z \right|^2\]
\[\left| z \right|^2 < \left| z \right|^2\]
\[\left| z \right|^2 \geq \left| z \right|^2\]
Solution
It is obvious that, for any complex number z,
\[\left| z \right|^2 = \left| z \right|^2\]
Hence, the correct option is (b).
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