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Polynomial Root Finding on the 12C
Post: #1
02-19-2007, 06:39 PM
Les Wright Offline
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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

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Post: #2
02-19-2007, 06:50 PM
Gerson W. Barbosa Offline
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Hello Les,

I think you mean Valentin Albillo's HP-12C Serendipitous Solver.

Regards,

Gerson.

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Post: #3
02-19-2007, 06:51 PM
Paul Dale Offline
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Try Valentin's article:

http://membres.lycos.fr/albillo/calc/pdf/DatafileVA005.pdf

- Pauli

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Post: #4
02-19-2007, 06:52 PM
Valentin Albillo Offline
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Best regards from V.

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Post: #5
02-19-2007, 07:37 PM
Les Wright Offline
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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

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