Re: Solve[] doesn't
- To: mathgroup at smc.vnet.net
- Subject: [mg90640] Re: Solve[] doesn't
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Thu, 17 Jul 2008 05:35:13 -0400 (EDT)
- Organization: Uni Leipzig
- References: <g5kil1$8lf$1@smc.vnet.net>
- Reply-to: kuska at informatik.uni-leipzig.de
Hi,
Solve[Eliminate[{x - y == 1,
x^2 + y^2 == 3,
x^3 - y^3 == 4}, y], x]
work fine with Mathematica 6.0.3 ..
Regards
Jens
Hauke Reddmann wrote:
> This is extremely annoying.
> I have a very large (this seems to be critical) equation
> system. It's partly linear, partly horror, but already
> after I solve the linear part, a certain solution (which
> is obviously one since substituting it in makes all equations
> identical zero) can't be found anymore. The solution has some
> surds (this also seems critical, the ones without are found)
> but the equations are strictly polynomic.
>
> Faked Example (the real one only PM-ed, since it's a bit
> oversized):
>
> x-y=1
> x^2+y^2=3
> x^3-y^3=4
> and after y was eliminated, it doesn't find x. (=golden mean here)
>
> Huh?