HP Forum Archive 16

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Polynomial Root Finding on the 12C Message #1 Posted by Les Wright on 19 Feb 2007, 6:39 p.m. Does anyone recall seeing in recent months an entry or a link to something (maybe from Gerson or Valentin) discussing how one can use the 12c's NPV/IRR computing capabilities and CF registers to find a real root of a polynomial? I have been wracking my brain trying to figure how it is done but I can seem to trick the HP12Cp into finding the root I want. Keeping getting Error 3 or Error 7. Any ideas? Les

Re: Polynomial Root Finding on the 12C Message #2 Posted by Gerson W. Barbosa on 19 Feb 2007, 6:50 p.m., in response to message #1 by Les Wright Hello Les, I think you mean Valentin Albillo's HP-12C Serendipitous Solver. Regards, Gerson.

Re: Polynomial Root Finding on the 12C Message #3 Posted by Paul Dale on 19 Feb 2007, 6:51 p.m., in response to message #1 by Les Wright Try Valentin's article: http://membres.lycos.fr/albillo/calc/pdf/DatafileVA005.pdf - Pauli

Re: Polynomial Root Finding on the 12C Message #4 Posted by Les Wright on 19 Feb 2007, 7:37 p.m., in response to message #3 by Paul Dale That's the one! Ingenious, even if you do have to trick it into finding a positive root. FWIW, the timings on the 12Cp are several times faster than that quoted for the 12C. The cheap kinpo thing is good for something! Les

You have mail Message #5 Posted by Valentin Albillo on 19 Feb 2007, 6:52 p.m., in response to message #1 by Les Wright Best regards from V.

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