(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Urysohn's lemma

My book says that the "if" part of Urysohn's lemma is obvious with no explanation. Can someone explain why?

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Urysohn's lemma

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