Solving the TVM equation for the interest rate

04152018, 10:46 AM
(This post was last modified: 04152018 11:00 AM by Gamo.)
Post: #2




RE: Solving the TVM equation for the interest rate
I was wondering on how HP doing this TVM on finding the interest [i] also.
I'm happen to read more about this in HP Journal Issue October 1977 start from page 22 in the article state that the previous HP80 Financial Calculator used 3 separate TVM formula which their performance deteriorated unacceptably when they were applied to the new more general equation. On the newer desktop model the HP92 used better general equation using one formula all together and did work out very well. This topic is very complicated for me and I like to share this information to anyone who like to know about this especially to Dieter. I try to implement this single TVM equation into the Newton's Method program by using Register as their TVM variables like STO 1 for [n] STO 2 for [I] and so on and not working yet. Link to this HP Journal: https://www.dropbox.com/s/6beqloidryfdim...7.pdf?dl=0 Gamo 

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