(12C Platinum) Cubic Equation

02052019, 10:24 PM
Post: #8




RE: (12C Platinum) Cubic Equation
(02042019 08:13 PM)Thomas Klemm Wrote: \(x^3  4x^2 + 6x  24 = 0\) Above entered coefficients order are good for root finding, and to evaluate polynomial. Example, with above entered polynomial, calculate f(X = 12.34) 1 Enter 12.34 [Δ%] [i] ; showed rate of 1134%, X = 1 + i NPV 0 PMT FV CHS ; showed 1320.018504 < f(X) Confirm with Horners rule: 12.34 Enter Enter Enter RCL 0 * RCL 1 + * RCL 2 + * RCL 3 + ; showed 1320.018504 Doing the same with reversed ordered entry is not as accurate: 24 CHS CF0 6 CFj 4 CHS CFj 1 CFj 1 Enter 12.34 [1/x] [Δ%] [i] ; showed rate of 91.89627229%, X = 1/(1 + i) NPV ; showed 1320.018507, +3 ULP error 

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Messages In This Thread 
(12C Platinum) Cubic Equation  Gamo  01122019, 09:27 AM
RE: (12C Platinum) Cubic Equation  Albert Chan  01122019, 01:39 PM
RE: (12C Platinum) Cubic Equation  Albert Chan  02042019, 04:10 PM
RE: (12C Platinum) Cubic Equation  Thomas Klemm  02042019, 08:13 PM
RE: (12C Platinum) Cubic Equation  Albert Chan  02052019 10:24 PM
RE: (12C Platinum) Cubic Equation  Gamo  02052019, 04:24 AM
RE: (12C Platinum) Cubic Equation  Thomas Klemm  02052019, 06:09 AM
RE: (12C Platinum) Cubic Equation  Thomas Klemm  02052019, 06:20 AM

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