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.
[
]
i
e
y
x
=
−
×
+
(
(
))
ln
1
1
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
i
FV
PV
N
=
÷
−
−
÷
(
)
(
)
1
1
where:
PMT
= 0
The iteration used to compute
i
:
0
1
1
1
=
+
×
− +
+
× +
−
−
PV
PMT
G
i
i
FV
i
i
N
N
(
)
(
)
[
]
I
C Y
e
y
x
%
/
=
×
×
−
×
+
1
100
(
ln(
))
1
1
where:
x = i
y = P/Y
÷
C/Y
G
i
k
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:
i
ƒ
0
N
PV
FV
PMT
=
+
÷
−
(
)
where:
i =
0
Financial Formulas
Time Value of
Money