MathGroup Archive 2004

[Date Index] [Thread Index] [Author Index]

Search the Archive

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.

  • Prev by Date: notation for integration limits
  • Next by Date: Re: Print with limited precision
  • Previous by thread: Re: notation for integration limits
  • Next by thread: Re: Question on ComplexExpand