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Re: Complex Variables


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
> 
> 
> 


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