Re: symbolic calculations with complex numbers
- To: mathgroup at smc.vnet.net
- Subject: [mg31970] Re: symbolic calculations with complex numbers
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Fri, 14 Dec 2001 16:52:58 -0500 (EST)
- Organization: Universitaet Leipzig
- References: <9vccvd$359$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi,
Abs[p + I q] /. Abs[a_] :> Sqrt[Re[a]^2 + Im[a]^2] //
FullSimplify[#, Element[{p, q}, Reals]] &
it is not a simplification but you simply force it by a
rule.
Regards
Jens
Roberto Dinapoli wrote:
>
> Hello,
> I've a problem: is there a way to convince mathematica to do symbolic
> calculations and simplifications taking all symbolic variables as real?
> example:
> Abs[p+ I q] is not evaluated, I'd like to see : sqrt[ sqr[p]+sqr[q] ]...
>
> for all the calculations I have to do it's really important.
>
> Thanks a lot
> Roberto