Re: Re[] function
- To: mathgroup at smc.vnet.net
- Subject: [mg105977] Re: [mg105957] Re[] function
- From: "David Park" <djmpark at comcast.net>
- Date: Tue, 29 Dec 2009 01:17:39 -0500 (EST)
- References: <15605470.1261994802600.JavaMail.root@n11>
The initial Element expression does nothing all by itself. Is this what you want? Print["The definition of Z"] Z = (Rm I Xm)/(Rm + I Xm) Print["Take the real part, but this only partially simplifies."] step1 = Re[Z] Print["ComplexExpand simplifies assuming that all symbols are real"] ComplexExpand[step1] David Park djmpark at comcast.net http://home.comcast.net/~djmpark/ From: Fabian [mailto:fabian.uriarte at gmail.com] 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