We denote by 0 the set of all sequences u = (ux)k=1,2, = (u1, u2, ...) (uk E R) %3D satisfying sup Ju< 00. Moreover, we define a norm of as follows: I| = sup ul. Then, prove that is a Banach space with respect to || - ||- (It is sufficient to prove com- pleteness of , i.e., show that a Cauchy sequence {u}-1.2 is a convergent sequence in , where un) = (u", u",..) E e*.) %3D

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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Problem.
We denote by the set of all sequences
(uk)k-1,2, (u1, Uz, -.) (ug E R)
satisfying sup Ju < 0o. Moreover, we define a norm of as follows:
= sup ul.
Then, prove that is a Banach space with respect to ||- || - (It is sufficient to prove com-
pleteness of , i.e., show that a Canchy sequence {u"}-1.2 is a convergent sequence
in , where um) = (u", u".) € E*.)
(n)(n)
%3D
Transcribed Image Text:Problem. We denote by the set of all sequences (uk)k-1,2, (u1, Uz, -.) (ug E R) satisfying sup Ju < 0o. Moreover, we define a norm of as follows: = sup ul. Then, prove that is a Banach space with respect to ||- || - (It is sufficient to prove com- pleteness of , i.e., show that a Canchy sequence {u"}-1.2 is a convergent sequence in , where um) = (u", u".) € E*.) (n)(n) %3D
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