|Re: HP12c Financial Questions... yet again!|
Message #8 Posted by tony(nz) on 2 May 2008, 3:26 a.m.,
in response to message #4 by CaribbeanHP12c
Tony... genius at the HP12c! That works perfect... but i can never find these type of sequences on in the Manual.
The "Solutions Manual" has a chapter on Canadian Mortgages but they do the interest rate calc slightly differently:
6 [n] 200 [ENTER][PV] 10 [+] [CHS] [FV] [i] -> 0.816484605 % per month
The book also shows [g][END] being set before this calculation but as PMT=0 the payment mode is irrelevant.
I only do the calc the way I do because I think "OK over 6 periods $1 grows to $1.05". Hence n=6 PV=1 FV=-1.05. That's easier for me than thinking "200 will grow to 210".
Tell me, is necessary to type in [g] [END] at that exact place. what if i put it in the beginning? or if the sequence was slightly rearranged. does this always effect outcomes?
If PMT=0 (and you are not solving for a non-zero PMT) then the PMT mode doesn't matter. I only tend to mention it at the point where it is necessary.
For simple interest calculations, i can put in [n] or [PMT] before or after? Is there rules for this with the HP12c?
Any input order is fine - you just need everything set before you solve. I normally work left to right when writing down a solution.
The best thing is that if the answer is wrong you don't need to re-key everything - just correct the input error, and try again.
6 [n] 1 [CHS][PV] 0 [PMT] 1.05 [FV] [i] -> 0.816484605 % per month
240 [n] 750 [CHS][PMT] 0 [FV] [PV] ->$78,809.29
5000 [+] -> $83,809.29
You can also use NPV to get the purchase price directly but need 3 entries for the 240 PMTs as you can only have Nj up to 99:
Solve for [i] as above then do
750 [g][Cfj] 80 [g][Nj] then repeat twice more or do:
[x<>y][g][Cfj] [x<>y}[g][Nj] [x<>y][g][Cfj] [x<>y}[g][Nj]
I am ecstatic with this new info... thank you all.
Thanks for your enthusiasm Blake.
It's a great little machine!