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7-3
After configuring the parameters, use one of the function menus noted below to perform the
corresponding calculation.
• {SI} … {simple interest}
• {SFV} … {simple future value}
• An error (Ma ERROR) occurs if parameters are not configured correctly.
Use the following function menus to maneuver between calculation result screens.
• {REPT} … {parameter input screen}
• {GRPH} … {draws graph}
After drawing a graph, you can press (TRCE) to turn on trace and read calculation
results along the graph.
Each press of C while trace is turned on cycles the displayed value in the sequence: present
value (
PV) m simple interest (SI) m simple future value (SFV). Pressing B cycles in the
reverse direction.
Press ) to return to the parameter input screen.
3. Compound Interest
This calculator uses the following standard formulas to calculate compound interest.
S PV, PMT, FV, n
I % x 0
PMT =
PV + FV
–
FV =
PV + PMT
–
n =
log
(1+ iS) × PMT – FV × i
(1+ iS) × PMT + PV × i
{}
log (1+ i)
I % 0
39 ï307ðQ)9
PMT = –
n
PV + FV
)9 ï307sQ39
n =
PMT
PV + FV
–
= (1+ i × S) ×
, = (1 + i)
i
1–
–n
β
β
α
0
.........Payment : End
(Setup Screen)
1
.........Payment : Begin
(Setup Screen)
i =
100
I%
I%
(1+ ) –1
C/Y
P/Y
100 × [C/Y ]
............................... (P/Y = C/Y = 1)
(Other than
those above)
{
S =
.....
{
P
V =
–(PMT + FV)
P
V =
–(PMT + FV)