Products of function equivalence classes

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SUMMARY

The discussion centers on demonstrating the existence of a continuous function g such that the product of g and a given continuous function f results in the equivalence class containing the constant function 1. Specifically, if f is defined as f(x) = 1/x, then g can be defined as g(x) = x, leading to the conclusion that [fg] = [1] for all x in R. The inquiry also raises a question regarding the specific equivalence relation that defines the equivalence class containing the constant function 1.

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Homework Statement



If f ∈ C(R) with f(0) ≠ 0, show that there exisits a g ∈ C(R) such that [fg] = [1], where [1] denotes the equivalence class containing the constant function 1.

Homework Equations





The Attempt at a Solution


Let f ∈ C(R) such that f:R → R is defined as f(x) = 1/x and let g ∈ C(R) such that g:R → R is defined as g(x) = x. Therefore [fg] = [x/x] = [1] for all x∈R.

is this correct?
 
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"The equivalence class containing the constant function 1" with what equivalence relation?
 

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