|Re: 17bII german manual?|
Message #10 Posted by Peter A. Gebhardt on 30 Nov 2009, 12:45 p.m.,
in response to message #7 by BruceH
looking at p.297 (German manual for 17bII+ 1st printing, June 2003), solving for ENDW (FV) results in 179.895,65 - which is wrong, as one could easily prove with a 17bII (s/n: 3610M00859) or a 17bII+ (gold, s/n: CNA42903649)
The correct result should be 179.085,65 instead.
If you now try to use the corrected equation from said manual on p.237 (or the one from the 17b page Marcus sent to me) on the 200LX (BIOS 1.02A), one of the subterms used is described as being:
#PP = 1 - T * R/J div 360 + FP(N) mult R/J div #I/J
The 200LX then produces 180.397,71 (being even more off the correct result)
I fixed this by using:
#PP = RND( 1 - T * R/J div 360 + FP(N) mult R/J div #I/J : 3 )
Because I didn't encounter a similar discrepancy yet, independent tests & verification of my fix are appreciated.
Peter A. Gebhardt
PS: In the description on p.276 of said manual, it refers to "international usances" in adding the last RATE (PMT) to the ENDW (FV) in case T=0. That in turn does mean, that if you are in BEG mode (because of making/receiving payments on the first day already), then in fact you make/receive one more payment then calculated by #J mult R/J.
To correct for this, you have to add the following line to the end of the equation:
Edited: 2 Dec 2009, 1:17 p.m.