TI-83 Plus Tables and Reference Information 728
Financial Formulas
This section contains financial formulas for computing time value of
money, amortization, cash flow, interest-rate conversions, and days
between dates.
Time Value of Money
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1
))1(ln(−= +× xy
ei
where: PMT ƒ0
y=C/Y ÷ P/Y
x=(.
01 × I%) ÷ C/Y
C/Y = compounding periods per year
P/Y = payment periods per year
I% = interest rate per year
1)( )1( −÷= ÷− N
PVFVi
where: PMT =0
The iteration used to compute i:
N
N
iiFV
i
i
GPMTPV −
−+×+
+−
×+= )1(
)1(1
0