1. Derive a forward finite difference approximation of f" in the following form: a3f3+ a2f2+ a1f1 + ao fo ₤"(x) = + Etrunc(h; f, x). h² where fk = f(x+kh), ak are coefficients to be determined, and Etrunc is a truncation error term. Find an explicit formula of the truncation error term Etrunc and determine the order of the approximation.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 91E
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1. Derive a forward finite difference approximation of f" in the following form:
a3f3+ a2f2+ a1f1 + ao fo
₤"(x)
=
+ Etrunc(h; f, x).
h²
where fk
=
f(x+kh), ak are coefficients to be determined, and Etrunc is a truncation error
term. Find an explicit formula of the truncation error term Etrunc and determine the order of the
approximation.
Transcribed Image Text:1. Derive a forward finite difference approximation of f" in the following form: a3f3+ a2f2+ a1f1 + ao fo ₤"(x) = + Etrunc(h; f, x). h² where fk = f(x+kh), ak are coefficients to be determined, and Etrunc is a truncation error term. Find an explicit formula of the truncation error term Etrunc and determine the order of the approximation.
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