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Find ||f||sup if - f(x) = x on (-1,1). -. f(x) = 0 {²-2² if x EQ, -x² if x #Q, for all x ER.

Find ||f||sup if - f(x) = x on (-1,1). -. f(x) = 0 {²-2² if x EQ, -x² if x #Q, for all x ER.

Advanced Engineering Mathematics
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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Please offer an easy and simple statement to why a) is 1 and b) would just be positive infinity
10. Find ||f||sup if a. f(x) = x on (-1, 1). (2) - {²-²² b. f(x) = if x = Q, -x² if x # Q, for all x ER. K=0
Transcribed Image Text:10. Find ||f||sup if a. f(x) = x on (-1, 1). (2) - {²-²² b. f(x) = if x = Q, -x² if x # Q, for all x ER. K=0
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