Post Reply 
Solving the TVM equation for the interest rate
04-15-2018, 04:37 PM
Post: #4
RE: Solving the TVM equation for the interest rate
I looked into the very same subject when I wrote the HP-41 MCODE version of TVM$.

I don't recall exactly how or why I came to this, but the expression I used for the initial guess was:

i0 = [ abs( PV + n*PMT + FV) ]^1/n

Surely this isn't the best, or may be not even sensible - but it works just fine for all tests and still holding up nicely.
Find all posts by this user
Quote this message in a reply
Post Reply 


Messages In This Thread
RE: Solving the TVM equation for the interest rate - Ángel Martin - 04-15-2018 04:37 PM



User(s) browsing this thread: 1 Guest(s)