For a math class, advanced calculus, a homework assignment was to show that the √5 is irrational. I took it a step further. I first tried looking a proof for it up on the web, but it I couldn't find any that didn't have serious errors which made the whole attempt invalid. Let me know if you find any errors in this.Hmm, doesn't seem to let me upload pdf's. Oh well:

http://www.geocities.com/rshadarack/sqr … tional.pdf

Oh, and it's odd for two reasons: the general proof is just as short as that for √2, and it uses a completely different strategy.

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