If
you are new to electrochemical impedance, or at least new to doing math with
impedance values, here are a couple of simple facts about the arithmetic of
complex numbers. Bard & Faulkner
has a useful math appendix also.
Simple
Stuff about complex numbers - some of the basics.
If
you are new to electrochemical impedance, or at least new to doing math with
impedance values, here are a couple of simple facts about the arithmetic of
complex numbers. 
