[Maxima] access results of linsolve

andre maute andre.maute at gmx.de
Tue Dec 15 19:24:25 CST 2009


On Wednesday 16 December 2009, Barton Willis wrote:
> Sorry, I deleted part of the input; try something like:
>
>  (%i1) ssol[1] : 42$
>
>  (%i2) ssol : linsolve([C1*3-2,C2*1+4],[C1,C2]);
>  (%o2) [C1=2/3,C2=-4]
>
> ssol[1] --> 42, not C1=2/3
>
>  (%i3) ssol[1];
>  (%o3) 42
>
> But inpart(ssol,1) is OK
>
>  (%i4) inpart(ssol,1);
>  (%o4) C1=2/3
>
> Sorry for the bother.
>
> Barton




Thanks for the clarification
Andre








>
> -----maxima-bounces at math.utexas.edu wrote: -----
>
> >To: maxima at math.utexas.edu
> >From: andre maute <andre.maute at gmx.de>
> >Sent by: maxima-bounces at math.utexas.edu
> >Date: 12/15/2009 05:37PM
> >Subject: Re: [Maxima] access results of linsolve
> >
> >Hi Barton,
> >
> >
> >could you explain the details of the difference?
> >I can't reproduce your output, see below
> >
> >>  (%i5) ssol : linsolve([C1*3-2,C2*1+4],[C1,C2]);
> >>  (%o5) [C1=2/3,C2=-4]
> >>
> >> Not what we want:
> >>
> >>  (%i6) ssol[1];
> >>  (%o6) ssol[1]
> >>
> >> OK
> >>
> >>  (%i7) inpart(ssol,1);
> >>  (%o7) C1=2/3
> >
> >========================================================
> >user at home:~$ maxima -b linsolve1.max
> >Maxima 5.19.1 http://maxima.sourceforge.net
> >Using Lisp SBCL 1.0.18.debian
> >Distributed under the GNU Public License. See the file COPYING.
> >Dedicated to the memory of William Schelter.
> >The function bug_report() provides bug reporting information.
> >(%i1)                        batch(linsolve1.max)
> >
> >
> >
> >
> >
> >batching /home/user/linsolve1.max
> >(%i2)                          display2d : false
> >(%o2) false
> >(%i3) sol:linsolve([C1*3-2,4+C2*1],[C1,C2])
> >(%o3) [C1 = 2/3,C2 = -4]
> >(%i4) subst(sol,[C1,C2,C1-C2])
> >(%o4) [2/3,-4,14/3]
> >(%i5) ssol:linsolve([C1*3-2,4+C2*1],[C1,C2])
> >(%o5) [C1 = 2/3,C2 = -4]
> >(%i6) ssol[1]
> >(%o6) C1 = 2/3
> >(%i7) inpart(ssol,1)
> >(%o7) C1 = 2/3
> >(%o7) "/home/user/linsolve1.max"
> >========================================================
> >
> >
> >
> >
> >
> >Andre_______________________________________________
> >Maxima mailing list
> >Maxima at math.utexas.edu
> >http://www.math.utexas.edu/mailman/listinfo/maxima








-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.math.utexas.edu/pipermail/maxima/attachments/20091216/ba4f9a41/attachment-0001.htm 


More information about the Maxima mailing list