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

Prove that if x in R and epsilon > 0 are arbitrary, then there exist r in Q such that |x - r | < epsilon

2. Relevant equations

3. The attempt at a solution

I'm stumped on this one. I tried using the reverse triangle inequality, but I seemingly hit dead ends with it.

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# Homework Help: Analysis Proof

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