Suppose that a(adsbygoogle = window.adsbygoogle || []).push({}); _{k}is a decreasing sequence and (a_{k}) approaches 0. Prove that for every k in the natural numbers, a_{k}is greater than or equal to 0.

I was thinking I should assume the sequence is bounded below by 0 and do a proof by contradiction.

Any suggestions?

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# Homework Help: Real Analysis: Sequences and Series

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