14 Dec
2008
14 Dec
'08
1:13 a.m.
Hi, On 13 Dec 2008, at 22:12, Richard B. Kreckel wrote:
Look up 'possymbol' in the user manual.
That did the trick, thanks. However, it doesn't seem to reduce the case of possymbol x("x"), y("y"); ex expr = sqrt(x*x*y*y) or sqrt(pow(x*y,2)); Although both are
0 and real it is not reduced to x*y. I have played around with some of the factorization functions to no avail. Does GiNaC support this kind of simplification? Could very well just be me missing something in the reference (Doxygen) docs.
(Although strictly speaking I enquired about sqrt(x*x); sqrt(y*y*x*x) where x and y are real > 0, it is something of a natural extension.) Regards, Freddie.