Chapter
6
Complex Numbers
SUMMARY POINTs
� Terminologies of complex numbers : i�
� 1: Imaginary unit z �a � bi : Complex number in Cartesian form
a : Real part of z
b : Imaginary part of z
* z �a � bi : Conjugate of z �a � bi
2 2 z � r � a � b : Modulus of z �a � bi arg ( z) ��
� arctan b : Argument of z �a � bi a
� Properties of Argand diagram : 1 . Real axis : Horizontal axis 2 . Imaginary axis : Vertical axis
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