Texas Instruments TI-84 PLUS Guidebook - Page 397
Interest Rate Conversions, Days between Dates, Actual/actual day-count method, Number of Days II
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Internal rate of return is dependent on the values of the initial cash flow (CF0) and subsequent cash flows (CFj). i = I% ÷ 100 Interest Rate Conversions 4Eff = 100 × (eCP × ln(x + 1) - 1) where: x = .01 × Nom ÷ CP 4Nom = 100 × CP × [e1 ÷ CP × ln(x + 1) - 1 ] where: x = .01 × Eff Eff = effective rate CP = compounding periods Nom = nominal rate Days between Dates With the dbd( function, you can enter or compute a date within the range Jan. 1, 1950, through Dec. 31, 2049. Actual/actual day-count method (assumes actual number of days per month and actual number of days per year): dbd( (days between dates) = Number of Days II - Number of Days I Number of Days I = (Y1-YB) × 365 + (number of days MB to M1) + DT1 + (---Y----1----------Y---B----)4 Number of Days II = (Y2-YB) × 365 + (number of days MB to M2) + DT2 + (---Y----2----------Y---B----)4 Appendix B: Reference Information 390