MathGroup Archive 2009

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

Search the Archive

Re: Re[] function

  • To: mathgroup at smc.vnet.net
  • Subject: [mg105979] Re: [mg105957] Re[] function
  • From: DrMajorBob <btreat1 at austin.rr.com>
  • Date: Tue, 29 Dec 2009 01:18:02 -0500 (EST)
  • References: <200912280955.EAA01706@smc.vnet.net>
  • Reply-to: drmajorbob at yahoo.com

Your first line has no effect.

Z = (Rm*\[ImaginaryJ] Xm)/(Rm + \[ImaginaryJ]*Xm);
ComplexExpand@Re[Z]

(Rm Xm^2)/(Rm^2 + Xm^2)

Bobby

On Mon, 28 Dec 2009 03:55:34 -0600, Fabian <fabian.uriarte at gmail.com>  
wrote:

> Dear Group-
>
> Why can't Mathematica evaluate "Re[]" here ?
>
> {Rm, Xm} \[Element] Reals;
> Z = (Rm*\[ImaginaryJ] Xm)/(Rm + \[ImaginaryJ]*Xm);
> Z = ComplexExpand[Z]
> Re[Z]
>
> -Thank you
>


-- 
DrMajorBob at yahoo.com


  • References:
  • Prev by Date: Re: function
  • Next by Date: simplifying a system of equations
  • Previous by thread: Re[] function
  • Next by thread: Re: Re[] function