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Question on ComplexExpand
This question is related to a previous post, and to a project in stability of a G&C feedback system I am working on. Is there a way to get ComplexExpand to automatically convert Abs to Sqrt, Arg to ArcTan, etc., as target functions? For example ComplexExpand[Abs[x+y*I]] gives Sqrt[x^2+y^2] ComplexExpand[Arg[x+y*I]] gives ArcTan[y/x] (Note: ComplexExpand assumes all symbols are real by default.) I wasnt able to find an option to do that in 4.2.1. Thanks.