HP (Hewlett-Packard) HP 33s Calculator User Manual


 
Miscellaneous Programs and Equations
17–1
File name 33s-English-Manual-040130-Publication(Edition 2).doc Page : 388
Printed Date : 2004/1/30 Size : 13.7 x 21.2 cm
17
Miscellaneous Programs and
Equations
Time Value of Money
Given any four of the five values in the "Time–Value–of–Money equation" (TVM),
you can solve for the fifth value. This equation is useful in a wide variety of
financial applications such as consumer and home loans and savings accounts.
The TVM equation is:
01001
100
10011
=+++
+
B))I((F
I
)I(
P
N
N
Balance, B
Future Value, F
Payments, P
N
_
1
N
1
2
3
The signs of the cash values (balance, B; payment, P; and future balance, F)
correspond to the direction of the cash flow. Money that you receive has a positive
sign while money that you pay has a negative sign. Note that any problem can be
viewed from two perspectives. The lender and the borrower view the same
problem with reversed signs.