HP Forums / HP Museum Forums / Old HP Forum Archives v / Polynomial Root Finding on the 12C

Linear Mode
Polynomial Root Finding on the 12C


▼
Post: #6
02-19-2007, 06:39 PM
Les Wright Offline
Unregistered
Posts: 1,368
Threads: 212
Joined: Dec 2006

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

Find
▼
Post: #7
02-19-2007, 06:50 PM
Gerson W. Barbosa Offline
Unregistered
Posts: 2,761
Threads: 100
Joined: Jul 2005

Hello Les,

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

Regards,

Gerson.

Find
Post: #8
02-19-2007, 06:51 PM
Paul Dale Offline
Unregistered
Posts: 3,229
Threads: 42
Joined: Jul 2006

Try Valentin's article:

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

- Pauli

Find
▼
Post: #9
02-19-2007, 07:37 PM
Les Wright Offline
Unregistered
Posts: 1,368
Threads: 212
Joined: Dec 2006

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

Find
Post: #10
02-19-2007, 06:52 PM
Valentin Albillo Offline
Unregistered
Posts: 1,755
Threads: 112
Joined: Jan 2005

Best regards from V.

Find

Forum Jump: