Ah, ok. So its a simple case of us using the wrong version of the
documentation (or wrong version of the program). I wouldn't have thought
that a two number difference in the third element of the version number
would have mattered.
Thank you for your time,
James Supancic
On 6/10/06, Yasuaki Honda <yhonda at mac.com> wrote:
>
> Hi James,
>
> Just for the clarity, on using Maxima 5.9.3, the find_root()
> works as documented in the latest online manual:
>
> Maxima 5.9.3 http://maxima.sourceforge.net
> Using Lisp CMU Common Lisp 19c (19C)
> Distributed under the GNU Public License. See the file COPYING.
> Dedicated to the memory of William Schelter.
> This is a development version of Maxima. The function bug_report()
> provides bug reporting information.
> (%i1) find_root (sin(x) - x/2, x, 0.1, %pi);
> (%o1) 1.895494267033981
> (%i2)
>
> Yasuaki Honda
>
> On 2006/06/11, at 9:13 AM, van Nek wrote:
>
> > Am 10 Jun 2006 um 14:31 hat James Supancic geschrieben:
> >
> > >
> > > numerical methods gone missing?
> > >
> > > I am trying to help someone on the freenode #maximia IRC channel,
> > they would like to use the
> > > find_root function as documented in in the Maximia manual.
> > >
> > > However, any attempt to use the function, such as
> > >
> > > find_root (sin(x) - x/2, x, 0.1, %pi);
> > >
> > > fails by returning a slightly modified version of itself,
> > basically the output is
> > > find_root (sin(x) - x/2, x, 0.1, %pi);
> > > with some minor formatting changes.
> > > In the manuals example the result should have been
> > >
> > > 1.895494267033981
> > >
> > > I suspect that we do not have the proper numerical module loaded?
> > I tried loading a bunch of
> > > stuff out of /usr/share/maxima/5.9.1, and it failed to fix the
> > problem.
> > >
> > > What must we do to get the find_root function to work as advertised.
> > >
> > > Thank you for your time,
> > > James Supancic
> > >
> >
> > Hi James,
> >
> > I read that you are using 5.9.1.
> >
> > In 5.9.1 and 5.9.2 this function is called 'interpolate'
> >
> > 5.9.1/2: interpolate(sin(x) - x/2, x, 0.1, %pi); --> 1.895494267033981
> >
> > 5.9.3: find_root (sin(x) - x/2, x, 0.1, %pi); --> 1.895494267033981
> >
> > Volker
>
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