3. Suppose f is continuous on [0, ∞) and ƒ is uniformly continuous on [1, ∞). Prove that f is uniformly continuous on [0, ∞). 4. Suppose f is defined on R and f satisfies |f(x) = f(y)| ≤ C\x − ya for all x, y E R. Here C and a are two given positive constants. Prove that f is uniformly continuous on R.

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter5: Rings, Integral Domains, And Fields
Section5.4: Ordered Integral Domains
Problem 8E: If x and y are elements of an ordered integral domain D, prove the following inequalities. a....
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3. Suppose ƒ is continuous on [0, ∞) and ƒ is uniformly continuous on [1, ∞). Prove
that ƒ is uniformly continuous on [0, ∞).
4. Suppose f is defined on R and f satisfies
|ƒ(x) − f (y)| ≤ C\x − y|ª
for all x, y € R. Here C and a are two given positive constants. Prove that f is uniformly
continuous on R.
Transcribed Image Text:3. Suppose ƒ is continuous on [0, ∞) and ƒ is uniformly continuous on [1, ∞). Prove that ƒ is uniformly continuous on [0, ∞). 4. Suppose f is defined on R and f satisfies |ƒ(x) − f (y)| ≤ C\x − y|ª for all x, y € R. Here C and a are two given positive constants. Prove that f is uniformly continuous on R.
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