Consider an iterative algorithm generating a sequence {x'}t>1 in R" that converges to x* E R". We seek to characterize the rate of convergence via two values p e N and 0 < B < o∞ by finding the largest p such that - x lim sup く0. t→" ||æt-1 - x* ||P Let 0 < 8 < 1 and define a sequence rį = ||x* – x* ||. Categorize the convergence of the following sequences as sublinear, linear, superlinear, or quadratic. Justify and explain your answers. (a) rt = (b) rị = 8t (c) Tt = St2
Consider an iterative algorithm generating a sequence {x'}t>1 in R" that converges to x* E R". We seek to characterize the rate of convergence via two values p e N and 0 < B < o∞ by finding the largest p such that - x lim sup く0. t→" ||æt-1 - x* ||P Let 0 < 8 < 1 and define a sequence rį = ||x* – x* ||. Categorize the convergence of the following sequences as sublinear, linear, superlinear, or quadratic. Justify and explain your answers. (a) rt = (b) rị = 8t (c) Tt = St2
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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
Transcribed Image Text:Consider an iterative algorithm generating a sequence {x'}t>ı in R" that converges to x* € R". We seek to
characterize the rate of convergence via two values p e N and 0 < B < ∞ by finding the largest p such that
B = lim sup
t→o ||xt-1
||a* – a*||
x* ||P
< 0∞.
Let 0 < 8< 1 and define a sequence rį =
as sublinear, linear, superlinear, or quadratic. Justify and explain your answers.
||x' – a* ||. Categorize the convergence of the following sequences
- x
(a) rt =
(b) ri = ôt
(c) rt =
(d) rt = 8²"
(e) Let 8
0.1 and use semilogy to plot each of the sequences above on the same Matlab figure for
1<t< 8. Comment on the speed of convergence by relating it to your categorization.
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