HP 19B Formulas - Printable Version +- HP Forums (https://archived.hpcalc.org/museumforum) +-- Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum-1.html) +--- Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum-2.html) +--- Thread: HP 19B Formulas (/thread-75494.html) |
HP 19B Formulas - barry d. - 06-27-2005 Hopefully someone can help me with a formula that appears to be reasonably simple to figure out, for any experienced HP user. I'm just not all that savvy when it comes to creating formulas. Anyone familiar with the HP 19B calculator probably knows the formula below is the one used to solve for Present Value and loan calculations in leasing and loans. ADV:PMT=(-PV-FV*(SPPV(I%YR/12:N)))/(USPV(I%YR/12:N-#ADV)+#ADV) My goal is to simply add one simple step to the formula (or create another one if need be) to add "Annual Debt Service (ADS)calculation. In other words, once a payment is caluclated, I'd like to be able to have the calculator compute the payment AND multply by 12, which equals the ADS (Annual Debt Servive). This is a common component in real estate investment comparisions when analyzing the projected cash flow. Thank you for your assistance.
Barry
Re: HP 19B Formulas - Bob Wang - 06-28-2005 Barry: Probably the easiest way is just to multiply by 12 to get ADS after you've calculated PMT. BUT you can save *2* keystrokes, i.e. RCL PMT, instead of *,1,2,= by using the following formula, solving for ADS, and recalling the PMT ;-)
19B Lease with Advance Payments Annual Debt Service - Bob Wang - 06-29-2005 Barry:
Option 1: Enter all values, press MORE, PMT, *THEN* ADS:
Option 2: Enter all values, press MORE, ADS, RCL PMT:
Option 3: Enter all values, press MORE, PMT, RCL ADS:
Bob
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