A-54 Tables and Reference Information
8399APXA.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 1:25 PM Printed: 02/19/01 1:40 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 11
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
iFVPVN
=÷ −
−÷
()
()11
where: PMT =0
The iteration used to compute i:
011 1
=+ × −+
+×+
−−
PV PMT G i
iFV i
i
NN
() ()
[]
ICYe
yx
%/
=× × −
×+
1100 (ln( ))11
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
=
×− ×
××
+
+
ln
ln()1
where: iƒ0
NPVFVPMT
=+÷
−()
where: i=0
Financial Formulas
Time Value of
Money