Solve Quartic with Casio FX115MS

08242019, 12:47 PM
(This post was last modified: 08252019 11:14 AM by Albert Chan.)
Post: #4




RE: Solve Quartic with Casio FX115MS
(11292018 05:28 PM)Albert Chan Wrote: Find D such that RHS is perfect square, i.e. discriminant = B^2  4(2D  A)(D^2  C) = 0 For many calculators, [SOLVE] might not be available. We can setup Newtons iterations to get D 2 = Ans  (B²  4(2 Ans  A)(Ans²  C)) ÷ (8(C + Ans(A  3 Ans = → 1.99137931 = → 1.991306465 = → 1.99130646 Note: for Casio FX115MS, it is not necessary to put bracket before 8 However, without the bracket, formula is ambiguous: https://plus.maths.org/content/pemdasparadox 

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Messages In This Thread 
Solve Quartic with Casio FX115MS  Albert Chan  11292018, 05:28 PM
RE: Solve Quartic with Casio FX115MS  Albert Chan  11292018, 10:31 PM
RE: Solve Quartic with Casio FX115MS  Albert Chan  02042019, 01:39 PM
RE: Solve Quartic with Casio FX115MS  Albert Chan  08242019 12:47 PM
RE: Solve Quartic with Casio FX115MS  SlideRule  03142020, 01:28 AM
RE: Solve Quartic with Casio FX115MS  Albert Chan  08302019, 02:02 PM
RE: Solve Quartic with Casio FX115MS  Albert Chan  09022019, 02:35 PM
RE: Solve Quartic with Casio FX115MS  Albert Chan  02012020, 12:27 PM
RE: Solve Quartic with Casio FX115MS  Albert Chan  03132020, 06:30 PM

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