Richard Fateman wrote:
> Looks like the symptom of a bug in the polynomial
> greatest common divisor algorithm. This could
> be caused by a bug in the integer division algorithm
> in the underlying lisp.
>
I've checked solve on Maxima 5.6 under CLISP.
Bug remains. So this isn't Lisp prolem and solve in Maxima
seems to be broken :-(
Comparing Maxima under GCL and CLISP I noticed another
strange thing. If execute sequentially
showtime:true;
w:expand((x+y+z)^100)$
ww:expand((x+y+z)^200)$
www:expand((x+y+z)^300)$
I get timings
3 sec
15 sec
40 sec
But if I restart Maxima and do just
www:expand((x+y+z)^300)$
I get 100 sec ! Why timings are so diffrent?
This is GCS feature since under CLISP time is always the same.
Vadim
--
[ Vadim V. Zhytnikov <vvzhy@mail.ru> <vvzhy@td.lpi.ac.ru> ]