Casio CFX-9850G PLUS, User'S Manual & Technical Reference

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329
Now you can press
6
to draw a cash flow graph.
6
(GRPH)
The left side is
PV
, while the right side is
FV
. The upper part of the graph is
positive (+), while the bottom part is negative (–).
u u
u u u
Installment savings
Input Condition: Future value is greater than the total of payments.
Formula Representation of Input Condition:
PMT
and
FV
have different signs (positive, negative) when
PV
= 0.
–
FV
<
n × PMT
when
FV
> 0
–
FV
>
n × PMT
when
FV
< 0
Example Calculate the interest rate required to have a $2,500 balance in
an installment savings account in two years when $100 is
deposited each month and interest is compounded semiannu-
ally.
Perform the following key operations from the input screen.
c*bc w
(Input
n
= 2
×
12.)
c
a w
(
PV
= 0)
- baa w
(
PMT
= –100)
cfaa w
( FV = 2,500)
bc w
(Monthly installment)
c w
(Compounding every six months)
2
(
I
%)
u u
u u u
Loans
Input Condition: Total of payments is greater than loan amount.
Formula Representation of Input Condition:
PMT
and
PV
have different signs (positive, negative) when
FV
= 0.
–
PV
>
n × PMT
when
PV
> 0
–
PV
<
n × PMT
when
PV
< 0
Compound Interest Calculations
19 - 3