Answer the following questions: (a) To what order accuracy in Ax does this finite-difference scheme approximate f'(x)? 1 -(ƒ(x + 4^x) − f (x − 4^x)) 8Ax (b) Approximately how much more accurate is the following scheme than the scheme in (a)? 1 4Ax −(ƒ(x+2^x) − f (x − 2^x)) (c) Suppose you wish to increase the accuracy of your finite-difference differentiation scheme. Can you obtain arbitrarily small error by decreasing the step size Ax? Why or why not?

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.6: Exponential And Logarithmic Equations
Problem 64E
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Answer the following questions:
(a) To what order accuracy in Ax does this finite-difference scheme approximate f'(x)?
1
8Ax
(b) Approximately how much more accurate is the following scheme than the scheme in
(a)?
·(ƒ(x + 4^x) − ƒ (x − 4^x))
1
4Ax
-(f(x+2^x) − f (x − 2^x))
(c) Suppose you wish to increase the accuracy of your finite-difference differentiation
scheme. Can you obtain arbitrarily small error by decreasing the step size Ar? Why
or why not?
Transcribed Image Text:Answer the following questions: (a) To what order accuracy in Ax does this finite-difference scheme approximate f'(x)? 1 8Ax (b) Approximately how much more accurate is the following scheme than the scheme in (a)? ·(ƒ(x + 4^x) − ƒ (x − 4^x)) 1 4Ax -(f(x+2^x) − f (x − 2^x)) (c) Suppose you wish to increase the accuracy of your finite-difference differentiation scheme. Can you obtain arbitrarily small error by decreasing the step size Ar? Why or why not?
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