Re: How to simplify 35/40?

[Quentin Spencer]

Henry F. Mollet wrote:

> It's also possible that vpa.m is a more recent addition. I was able to
> find/use rats.m but could not find vpa.m in my octave-forge distribution
> (probably about a good year old).
> Henry
>
> on 6/6/05 2:40 AM, address@hidden at address@hidden wrote:
>  
>
> > > But, using the function vpa I have the following error message:
> > > octave2.1:43> vpa ("35/40")
> > > error: `vpa' undefined near line 43 column 1
> > >
> > > Why?
> > >      
> > Probably because you don't have the "octave-forge" installed.
> >    

The vpa function has been in octave-forge since February 2003, but as
part of the symbolic package, it requires GiNaC. If GiNaC is not
installed when octave-forge is compiled, the symbolic functions are
skipped over and not installed. If you downloaded a binary version of
Octave and octave-forge from somewhere, GiNaC may or may not be
included. If you want to build your own octave-forge, GiNaC can be
obtained at www.ginac.de and its dependency CLN at www.ginac.de/CLN.

-Quentin




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