Looking for TVM formulas

[Jeff_Kearns]

  TVM_Equation.doc (Size: 52.5 KB / Downloads: 27) [/quote]
I can probably derive a symbolic equation from that program and algebra it into the other direct solutions I'm after
[/quote]

Here is the equation:

B*(1+i)^n + P*((1+i)^n-1)*(1/i+E) + F = 0

and make the following substitution for increased accuracy:
(1+i)^n = e^(n*ln(1+i)) = i'

where:
n-Number of compounding periods (n on HP-12C)
i=Periodic interest rate (i on HP-12C)
B=Initial Balance or Present Value (PV on HP-12C)
P=Periodic Payment (PMT on HP-12C)
F=Future Value (FV on HP-12C)
E=Begin/End mode (Begin = 1; End = 0)

Use convention that money in or received is positive and money paid out or deposited is negative.

Jeff Kearns