[Maxima] solve x^a*y^b-c*x-d*y

[Stavros Macrakis]

Yes, other "fancy" features in solve include breakup, programmode,
globalsolve, solveradcan, etc.  Most of these should probably disappear if
we can ever bring ourselves to break compatibility with vintage solve....

              -s

On Wed, May 2, 2012 at 11:03 AM, Barton Willis <willisb at unk.edu> wrote:

> > By the way, as far as I can tell, Barton's %solve is better in every way
> than solve.  It might be a good idea to have it replace the base system's
> solve, except that its output
> > format is (necessarily)  different from solve's, and it doesn't handle
> many of solve's fancy modes, so any code that depends on solve will have
> problems.
>
> The solve function sets the global multiplicities, but %solve doesn't.
>  Actually, the mechanism is broken (and globals used this way are icky, I
> think)
>
>  (%i2) solve(x,x);
>  (%o2) [x=0]
>
> OK:
>
>  (%i4) multiplicities;
>  (%o4) [1]
>
>  (%i5) solve(x^a,x);
>  (%o5) [x=0]
>
> Bogus: (
>
>  (%i6) multiplicities;
>  (%o6) [1]
>
> Compatibility with solve wasn't what I was aiming for when I wrote the
> to_poly_solver--replacing solve with %solve isn't something I've tried to
> do.
> Most of %solve is written in Maxima--I think this was a good choice. Maybe
> it will make it easier for others to extend.
>
> --bw
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