6. Consider the sequence of functions n²a* – sin(nx) fn(x) = x E (0, 00) n2x (i) Show that fn converges pointwise and determine the limit. (ii) Use the inequality | sin a| < |x\, x eR to show that fn converges uniformly to the above function in (0, 0). (iii) Calculate the limit na4 – sin(nx) lim dx. n 00 /1 n2x Justify any possible exchange of the integral with the limit.
6. Consider the sequence of functions n²a* – sin(nx) fn(x) = x E (0, 00) n2x (i) Show that fn converges pointwise and determine the limit. (ii) Use the inequality | sin a| < |x\, x eR to show that fn converges uniformly to the above function in (0, 0). (iii) Calculate the limit na4 – sin(nx) lim dx. n 00 /1 n2x Justify any possible exchange of the integral with the limit.
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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![6. Consider the sequence of functions
n²a4 – sin(nx)
fn(x)
x € (0, 00)
n2x
(i) Show that fn converges pointwise and determine the limit.
(ii) Use the inequality | sin x| < |x], x €R to show that fn converges uniformly to the above function
in (0, 00).
(iii) Calculate the limit
p² nx4 – sin(nx)
lim
dx.
n2x
Justify any possible exchange of the integral with the limit.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1db17ce4-1a18-4155-bd6b-6f94f4f69cf2%2F89b3690c-d111-473e-82dc-487b6d0c1f61%2Ff1nc6gw_processed.jpeg&w=3840&q=75)
Transcribed Image Text:6. Consider the sequence of functions
n²a4 – sin(nx)
fn(x)
x € (0, 00)
n2x
(i) Show that fn converges pointwise and determine the limit.
(ii) Use the inequality | sin x| < |x], x €R to show that fn converges uniformly to the above function
in (0, 00).
(iii) Calculate the limit
p² nx4 – sin(nx)
lim
dx.
n2x
Justify any possible exchange of the integral with the limit.
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