Calculators and numerical differentiation

10302020, 11:41 PM
Post: #2




RE: Calculators and numerical differentiation
The WP 34S doesn't use either of the methods discussed. It uses an order 10 method for it's derivative with fallbacks to order 6 and 4 if the function doesn't evaluate properly. For the second derivative is again uses an order 10 method with a fallback to an order 4 method. The order 10 methods are a weighted summation of \( f(x \pm 1) \), \( f(x \pm 2) \), \( f(x \pm 3) \), \( f(x \pm 4) \) and \( f(x \pm 5) \).
There are good reasons for not wanting to evaluate the function at the x specified. 

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Messages In This Thread 
Calculators and numerical differentiation  robve  10302020, 09:57 PM
RE: Calculators and numerical differentiation  Paul Dale  10302020 11:41 PM
RE: Calculators and numerical differentiation  Albert Chan  10312020, 01:20 AM
RE: Calculators and numerical differentiation  Wes Loewer  11012020, 05:39 AM
RE: Calculators and numerical differentiation  Albert Chan  11012020, 05:39 PM
RE: Calculators and numerical differentiation  Albert Chan  11012020, 11:43 PM
RE: Calculators and numerical differentiation  Wes Loewer  11032020, 06:09 PM
RE: Calculators and numerical differentiation  Albert Chan  11032020, 10:14 PM
RE: Calculators and numerical differentiation  Wes Loewer  11042020, 04:14 PM
RE: Calculators and numerical differentiation  CMarangon  11032020, 06:55 PM
RE: Calculators and numerical differentiation  Wes Loewer  11042020, 04:04 PM

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