|Re: hp48, factorization|
Message #7 Posted by Rainer Wiedemann (Germany) on 2 Mar 2010, 7:05 p.m.,
in response to message #6 by Sok-khieng Chum Hun
No, I don't think so. It should at least have found a numerical solution.
I just dug out my hp50g and I also found batteries for it. So I tried your polynomial. The 50g does factoring much similar to your Matlab solution, it yields a numerical solution.
(s^2 + 1473.5755*s + 1000000) * (s^2 - 1338.1541*s + 1000000)
I couldn't get it to perform further factoring, i. e. have it find the complex roots. That seems strange to me.
OK, I'm not an experienced hp50g user, coz I prefer my old 41, and do higher complexity stuff on a pc.
So I suppose it might be a RAM issue, AFAIK the 48gx has 128k, the 50g some more.
Probably Raymond reads this thread, he's a 48g(x) expert and he could know more about CAS and its limitations.
Edited: 2 Mar 2010, 7:53 p.m.