Casio FX-9750GII-SC User Guide - Page 203
Converting between the nominal interest rate and effective interest rate, interest rate
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a : ,17PM1 = I BALPM1-1 s i I s (307 sign) b : PRNPM1 =307 + BALPM1-1 s i c : BALPM2 = BALPM2-1 + PRNPM2 PM2 3 d : PRN = PRNPM1 + PRNPM1+1 + ... + PRNPM2 PM1 3PM2 e : ,17=,17PM1 +,17PM1+1 + ... + ,17PM2 PM1 BAL0 = PV (,171 = 0 and PRN1 = 307 at beginning of installment term) S Converting 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. { }[C/Y] I%' = (1+ I% [P/Y ] ) -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} 7-8