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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
[]
1
))1(ln(
−=
+×
xy
ei
where:
PMT
ƒ
0
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
i
iFV
i
i
GPMTPV
−
−
+×+
+−
×+=
)1(
)1(1
0