1000
-2000
-2500
0
5000
3000
Chapter 14: Applications
258
CF0
= 2000
CFList
= {2000,
L
3000,4000}
CFFreq
= {2,1,2}
npv(, irr(
npv(
(net present value) is the sum of the present values for the cash inflows and outflows. A
positive result for
npv
indicates a profitable investment.
npv(
interest rate
,
CF0
,
CFList
[
,
CFFreq
]
)
irr(
(internal rate of return) is the interest rate at which the net present value of the cash flows is
equal to zero.
irr(
CF0
,
CFList
[
,
CFFreq
]
)
Calculating Amortization
Calculating an Amortization Schedule
Use the amortization functions (menu items
9
,
0
, and
A
) to calculate balance, sum of principal, and
sum of interest for an amortization schedule.
bal(
bal(
computes the balance for an amortization schedule using stored values for
æ
,
PV
, and
PMT
.
npmt
is the number of the payment at which you want to calculate a balance. It must be a positive
integer < 10,000.
roundvalue
specifies the internal precision the calculator uses to calculate the
balance; if you do not specify
roundvalue
, then the TI-84 Plus uses the current
Float/Fix
decimal-
mode setting.
