Use Taylor series to prove the following finite difference approximations: (a) f()(x) = r, fi-2 - 8fi-1 + 8fi+1 - fi+2 12 Ax? dx (b) d³f f(3)(x) = dx3 -fi+3f+1-3fi+2 + fi+3 Ax3 x=x

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Use Taylor series to prove the following finite difference approximations:
(a)
f(9(x) = r,
dx
fi-2 - 8fi-1 + 8fi+1 - fi+2
12 Ax?
(b)
d³f
f(3)(x) :
dx3
=
-fi +3fi+1 -3fi+2 + fi+3
Ax3
x=x
Transcribed Image Text:Use Taylor series to prove the following finite difference approximations: (a) f(9(x) = r, dx fi-2 - 8fi-1 + 8fi+1 - fi+2 12 Ax? (b) d³f f(3)(x) : dx3 = -fi +3fi+1 -3fi+2 + fi+3 Ax3 x=x
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