Difference between revisions of "Imaginary part"
(Fixed parentheses' height)
|Line 20:||Line 20:|
Latest revision as of 14:56, 5 September 2008
Any complex number can be written in the form where is the imaginary unit and and are real numbers. Then the imaginary part of , usually denoted or , is just the value . Note in particular that the imaginary part of every complex number is real.
A complex number is real exactly when .
- . Note in particular that is not in general a multiplicative function, for arbitrary complex numbers .