Let (fn)nen be a sequence in C(0, 1]) and (ax)keN a sequence of positive numbers, such that the series 1 4% a converges and such that ISk+1 - Sell Sax for all k eN. Show that ISntk(2) – fn(z)| < ||fn+k – fall

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter8: Sequences And Series
Section8.3: Geometric Sequences
Problem 4E: (a) The nth partial sum of a geometric sequence an=arn1 is given by Sn=. (b) The series...
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Let (fn)nen be a sequence in C(0, 1]) and (ax)keN a sequence of positive numbers, such
that the series 1 4% a converges and such that
ISk+1 - Sell Sax for all k eN.
Show that
ISntk(2) – fn(z)| < ||fn+k – fall <Eas
jun
for all n, k eN and z € (0, 1].
Use this to show that C([0, 1]) is complete.
Transcribed Image Text:Let (fn)nen be a sequence in C(0, 1]) and (ax)keN a sequence of positive numbers, such that the series 1 4% a converges and such that ISk+1 - Sell Sax for all k eN. Show that ISntk(2) – fn(z)| < ||fn+k – fall <Eas jun for all n, k eN and z € (0, 1]. Use this to show that C([0, 1]) is complete.
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