45. Let a> 0. Prove that f(X)= iS uniformly continuaus on on [a,00), So f(c1) = a. Similarly, there exists a c2 E (a, b] with f(c2) = B. %3D Definition. Let ECR and f a function with domain E. f is uniformly continuous on E if for all E> 0, there exists a 8(e) > 0 such that for all x, y E E with |x -y| < 8, |f(x) – f(y)| < e. Example. Let ECR be bounded. Then f(x) = x² is uniformly continuous on E.
45. Let a> 0. Prove that f(X)= iS uniformly continuaus on on [a,00), So f(c1) = a. Similarly, there exists a c2 E (a, b] with f(c2) = B. %3D Definition. Let ECR and f a function with domain E. f is uniformly continuous on E if for all E> 0, there exists a 8(e) > 0 such that for all x, y E E with |x -y| < 8, |f(x) – f(y)| < e. Example. Let ECR be bounded. Then f(x) = x² is uniformly continuous on E.
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter1: Fundamentals
Section1.5: Permutations And Inverses
Problem 4E: 4. Let , where is nonempty. Prove that a has left inverse if and only if for every subset of .
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