Casio FX-9860GII-L-IH User Guide - Page 382
i = I, Amortization
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7-5-2 Amortization a : INTPM1 = I BALPM1-1 × i I × (PMT sign) b : PRNPM1 = PMT + BALPM1-1 × i c : BALPM2 = BALPM2-1 + PRNPM2 ΣPM2 d : PRN = PRNPM1 + PRNPM1+1 + ... + PRNPM2 PM1 ΣPM2 e : INT = INTPM1 + INTPM1+1 + ... + INTPM2 PM1 BAL0 = PV (INT1 = 0 and PRN1 = PMT at beginning of installment term) u 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 4(AMT) from the Financial 1 screen to display the following input screen for amortization. 4(AMT) PM1 first installment of installments 1 through n PM2 second installment of installments 1 through n n installments I interest rate PV principal PMT payment for each installment FV balance following final installment P/Y installments per year C/Y compoundings per year 2005704101