• An error occurs if parameters are not configured correctly.

Use the following function menus to maneuver between calculation result screens.

{REPEAT} … {parameter input screen}

{GRAPH} … {draws graph}

After drawing a graph, you can press !1(TRACE) to turn on trace and read calculation results along the graph.

Each press of e while trace is turned on cycles the displayed value in the sequence: present value (PV) simple interest (SI) simple future value (SFV). Pressing d cycles in the reverse direction.

Press J to return to the parameter input screen.

3. Compound Interest

This calculator uses the following standard formulas to calculate compound interest.

uPV, PMT, FV, n

I % 0

 

 

 

 

 

 

PV +β ⋅ FV

 

PV = – (α ⋅ PMT + β ⋅ FV)

PMT = –

 

 

α

 

 

 

 

 

 

 

 

 

 

 

 

 

(1+ iS) PMT FV i

 

 

 

log {

 

 

 

 

}

FV = – PV +

α ⋅

PMT

(1+ iS) PMT + PV i

β

n =

 

 

 

 

 

 

 

 

 

 

 

log (1+ i)

I % = 0

 

 

 

 

 

 

 

 

 

 

 

PV + FV

 

PV = (PMT × n + FV )

PMT = –

 

 

n

 

 

 

 

 

 

 

FV = (PMT n + PV)

n = –

PV + FV

 

PMT

 

 

 

 

 

α= (1+ i S) 1 – β , β = (1 + i) n

i

 

{

0

.........Payment : End

 

{

 

I% ...............................

 

 

 

(P/Y = C/Y = 1)

S =

(Setup Screen)

i =

 

100

 

 

 

 

C/Y

 

 

 

 

 

 

1

Payment : Begin

 

 

 

 

I%

 

 

 

 

(1+

 

 

)

P/Y

–1..... (Other than

 

 

(Setup Screen)

 

 

 

[C/Y ]

 

 

 

 

 

 

100

 

 

 

those above)

7-4