A–54 Tables and Reference Information
826DEC~1.DOC TI-83 international English Bob Fedorisko Revised: 10/26/05 2:20 PM Printed: 10/27/05 3:09
PM Page 54 of 58
This section contains financial formulas for computing time value of money,
amortization, cash flow, interest-rate conversions, and days between dates.
[]
ie
yx
=−
×+(())ln 1
1
where: PMT Æ’ 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
iFVPV
N
=÷ −
−÷
()
()1
1
where: PMT =0
The iteration used to compute i:
0
11
1=+ ×
−+






+×+
−
−
PV PMT G
i
i
FV i
i
N
N
()
()
[]
ICYe
yx
%/=× × −
×+
1100
(ln( ))1
1
where: x=i
y = P/Y
÷ C/Y
Gik
i
=+×1
where: k=0 for end-of-period payments
k=1 for beginning-of-period payments
N
PMT G FV i
PMT G PV i
i
i
i
=
×− ×
××

ï£




+
+
ln
ln()1
where: i Æ’ 0
NPVFVPMT
=+÷
−
()
where: i=0
Financial Formulas
Time Value of
Money
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