Adapting 'Accurate' TVM routine on HP-15C (and HP-34C) using MISO Technique

[Thomas Klemm]

(01-05-2014 04:55 PM)Jeff_Kearns Wrote:  Where did you get your figures for the 15C? They do not match my results.

As for the A Penny for your Thoughts example, both the 15C 'Classic' and LE (with the above TVM routine) give FV = 331,667,0070 - accurate to 9 significant digits and off by -0.000 000 090%. By comparison, the 32sii and 35s both give FV= 331,667.0067.

Agreed: I had for some reason E (register 6) set to 1.

Quote:Neither the 15C LE nor the 15C Classic are capable of calculating the i%. The 15C LE flashes 3.015... E 94 and the Classic went on for 20 minutes before I stopped it.

Did you set I = 2?
I used 3e-7 and 4e-7 as initial guesses and now I get: 3.170979158e-7

Quote:In the case of the Yield from a Risky Investment example, both the 15C LE and Classic models gave the correct true i% (although the correct numbers will flash in the LE display if one does not provide a suitable initial guess for i% in register 2). The 32sii gives the correct result for i% in all cases.

Darn. Here I must have used FV := $ 1,000,000 instead of FV := $ 100,000,000.
Thanks for checking. I'll adjust my post accordingly.

Quote:The 'riot' vs 'not' typo in the 32sii manual only seems to have crept in in edition 5. Edition 4 is correct.

Maybe they had to scan the document and used an OCR-program?

Best regards
Thomas