APPENDIX A
MATHEMATICAL REVIEW
A-1 FUNCTIONS OF A COMPLEX VARIABLE
Definition:
i or j is also used to indicate reactive components in electrical circuits; i is used in nonelectrical work. A complex number such as
or
can be shown in the complex plane as in Figure A-1. This is called the rectangular form. The magnitude M, as well as the direction or angle θ, can be computed from
or
and
or
This is called the polar form. The conversion from one form to the other is achieved by
and
This is the same as
as
We can ...
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