Two functions f/g Uniform Continuity

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Homework Help Overview

The discussion revolves around the uniform continuity of the quotient of two uniformly continuous functions, specifically when the denominator is non-zero. Participants are exploring whether the quotient f/g remains uniformly continuous under these conditions.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are questioning the conditions under which the quotient of two uniformly continuous functions is uniformly continuous, with some suggesting potential counterexamples. There is a discussion about specific functions, such as f(x)=1 and g(x)=x, and the implications of compactness on uniform continuity.

Discussion Status

The conversation is active, with participants sharing thoughts on specific functions and their properties. Some guidance has been offered regarding the conditions for uniform continuity on compact sets, but there is no explicit consensus on the general case.

Contextual Notes

There is a mention of the interval ]0,1] and the compactness of sets as factors influencing the discussion. Participants are also considering the implications of functions approaching zero in the denominator.

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I was wondering if f and g are two uniformly continuous functions on a set such that g(x) is not zero is f/g uniformly continuous?


I have a feeling it is not but I can't seem to find a counter example.
 
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The function 1/x on ]0,1] should probably be a good counterexample...
 
But 1 is not considering a function f is it?
 
Take f(x)=1, the constant function, and g(x)=x...
 
If D is compact then f/g will be uniformly continuous on D right?
 
Yes. That's why I took the interval ]0,1].
 

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