Complex Numbers Tutorial
The course material was structured assuming all students possessed basic familiarity with complex numbers. If you are not entirely comfortable with complex numbers, here are a few tutorials that should help you out as far as this course is concerned:
Note: Some of these tutorials might refer to the imaginary number as 
(
), whereas others might refer to it as 
(
). Both refer to the same quantity; although in EE, using is preferred since has been historically reserved for representing (ac) current.