(a) Re-write this formula using step size h/2 instead of h. (b) Multiply your answer from (a) by 4, subtract (*) from the result, and then divide everything by 3. We now should have an approximation to ƒ'(x) based on f(xo+h, f(x−h), f(xo+h/2) and f(xo-h/2). What is the error in this new approximation f'(xo)?

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter8: Graphing Quadratic Functions
Section: Chapter Questions
Problem 17CT
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Question

Taylor's theorem

(a) Re-write this formula using step size h/2 instead of h.
(b) Multiply your answer from (a) by 4, subtract (*) from the result, and
then divide everything by 3. We now should have an approximation to ƒ'(xo)
based on f(xo+h, f(x− h), ƒ(xo+h/2) and ƒ(xo – h/2). What is the error
in this new approximation f'(xo)?
-
Transcribed Image Text:(a) Re-write this formula using step size h/2 instead of h. (b) Multiply your answer from (a) by 4, subtract (*) from the result, and then divide everything by 3. We now should have an approximation to ƒ'(xo) based on f(xo+h, f(x− h), ƒ(xo+h/2) and ƒ(xo – h/2). What is the error in this new approximation f'(xo)? -
[7] [Richardson extrapolation for a 2nd order accurate approximation]
Using Taylor's theorem, it can be shown that if ƒ € C5 ([a, b]), then the
centered difference approximation formula for the first derivative is given by
f'(xo)
true value
=
f(xo+h)-f(xo - h)
2h
approximation
h²
6
h4
120 (5) (5)
-f"" (xo) +
error
(*)
Transcribed Image Text:[7] [Richardson extrapolation for a 2nd order accurate approximation] Using Taylor's theorem, it can be shown that if ƒ € C5 ([a, b]), then the centered difference approximation formula for the first derivative is given by f'(xo) true value = f(xo+h)-f(xo - h) 2h approximation h² 6 h4 120 (5) (5) -f"" (xo) + error (*)
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