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

Let I CRbe an interval which is open and closed at the same time. Prove that I=Ror I is the empty set.

2. Relevant equations

3. The attempt at a solution

I'm looking more for a outline structure for the solution. I have made assumptions that I is not equal to R seeking a contradition, but i dont know what further assumptions to make.

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# Homework Help: An Interval that is both open and closed.

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