Finding roots of sextic in radicals + Bug?



Barton Willis escribi?:
> -----maxima-bounces at math.utexas.edu wrote: -----
> 
> The user documentation (try ? factor) explains the meaning of
> factor(expr,p).

My mistake. I was expecting the header to list all the possible 
parameters and I didn't read the whole description. Sorry for that.

>> (%i1) factor(x^3+x*2, q^2-1);
>> Maxima encountered a Lisp error: Error in PROGN [or a callee]: Caught
>> fatal error [memory may be damaged]Automatically continuing.To reenable
>> the Lisp debugger set *debugger-hook* to nil.(%i2)
>>
>> Is this a bug?
> 
> Maybe, maybe not; it works for me.  Are you using version 5.14.0?
> What happens if you try the command right after starting Maxima?
> Have you have assigned a value to q?
> 
> (%i2) factor(x^3+x*2, q^2-1);
> (%o2) x*(x^2+2)
> 
> (%i3) build_info();
> Maxima version: 5.14.0
> Maxima build date: 21:46 12/27/2007
> host type: i686-pc-mingw32
> lisp-implementation-type: GNU Common Lisp (GCL)
> lisp-implementation-version: GCL 2.6.8
> 
> 
> Barton
> 

Must be the version, then:
Maxima version: 5.13.0
Maxima build date: 21:29 1/21/2008
host type: x86_64-unknown-linux-gnu
lisp-implementation-type: GNU Common Lisp (GCL)
lisp-implementation-version: GCL 2.6.8

I'm running the latest version available in Debian Unstable.

Thanks
Ismael