Re: Re: Big problem in solving radicals.
- To: mathgroup at smc.vnet.net
- Subject: [mg41814] Re: [mg41786] Re: Big problem in solving radicals.
- From: Andrzej Kozlowski <akoz at mimuw.edu.pl>
- Date: Fri, 6 Jun 2003 09:50:44 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
On Thursday, June 5, 2003, at 08:31 pm, Davide Del Vento wrote: > > x=a^2 if a<0 > NONE if a>0 No, Solve or Resolve will never do that because they does not look for real solutions. So what you mihgt get is: x==a^2 if Re[a]<0 I have heard a rumor that Resolve in the next version will do something like that. But don't get your hopes too high, a pretty small number of problems of this type can be resolved at all, though if you can do it by hand presumably Mathematica will also be able to. Andrzej Kozlowski Yokohama, Japan http://www.mimuw.edu.pl/~akoz/ http://platon.c.u-tokyo.ac.jp/andrzej/ > In the case of this example things are pretty simple, but if you want > I can give you a case in which this limitation is *very* big. > > Bye, > ;Davide Del Vento > > CNR Istituto Fisica Spazio Interplanetario > via del Fosso del Cavaliere, 100 / IT-00133 / Rome > Phone: +390649934357 > Fax: +390649934383 > Mobile: +393288329015 > E-Mail: davide @ astromeccanica.it > E-Mail: del vento @ ifsi . rm . cnr . it > > >