Re: Complex Variables

*To*: mathgroup at smc.vnet.net*Subject*: [mg55421] Re: Complex Variables*From*: Torsten Coym <torsten.coym at eas.iis.fraunhofer.de>*Date*: Wed, 23 Mar 2005 05:34:33 -0500 (EST)*Organization*: Fraunhofer Gesellschaft (http://www.fraunhofer.de/)*References*: <d1on33$nbs$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

This does not declare the symbols to be real, but it solves the given example, since ComplexExpand[] assumes all variables in the expression to be real: In[1]:= ComplexExpand[Conjugate[x+I y]] Out[1]= x-\[ImaginaryI] y Torsten wwolfe18 at comcast.net wrote: > This has been annoying me for a while. > Is there a way to declare symbols to be real so that > Re[x + i y] gives x and Conjugate[x + i y] gives x - i y etc? > > Warren Wolfe > > >