a : ,17PM1 = I BALPM1–1σ i I σ (307 sign)

b : PRNPM1 =307 + BALPM1–1σ i

c : BALPM2 = BALPM2–1 + PRNPM2

PM2

d : 3 PRN = PRNPM1 + PRNPM1+1 + … + PRNPM2

PM1

PM2

e : 3 ,17=,17PM1 +,17PM1+1 + … + ,17PM2

PM1

BAL0 = PV (,171 = 0 and PRN1 = 307 at beginning of installment term)

SConverting between the nominal interest rate and effective interest rate

The nominal interest rate (I% value input by user) is converted to an effective interest rate (I%' ) for installment loans where the number of installments per year is different from the number of compound interest calculation periods.

 

I%

 

[C/Y ]

 

 

[P/Y ]

 

I%' ={(1+

 

) –1}100

100 ⋅ [C/Y ]

The following calculation is performed after conversion from the nominal interest rate to the effective interest rate, and the result is used for all subsequent calculations.

i= I%' 100

Press (AMT) from the Financial 1 screen to display the following input screen for amortization.

(AMT)

PM1.......

first installment of installments 1 through n

PM2.......

second installment of installments 1 through n

n........... installments

I% ........ interest rate

PV ........ principal

307..... payment for each installment

FV ........ balance following final installment

P/Y ....... installments per year

C/Y ....... compoundings per year

After configuring the parameters, use one of the function menus noted below to perform the corresponding calculation.

{BAL} … {balance of principal after installment PM2}

{INT} … {interest portion of installment PM1}

{PRN} … {principal portion of installment PM1}

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