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December 2nd, 2015, 09:15 PM  #11 
Banned Camp Joined: Dec 2012 Posts: 1,028 Thanks: 24  That if we are talking about: C= (5^3+6^3)^(1/3) My "definition" fit correctly, viceversa for other known irrational we have to check if it works or introduce some restriction in that let us unable to "define" what we are talking about. Thanks Ciao Stefano 
December 2nd, 2015, 09:25 PM  #12  
Senior Member Joined: Aug 2012 Posts: 2,357 Thanks: 740  Quote:
Ok, so if I had the number 3/7, how would you find your points and your functions such that you would conclude that 3/7 is rational? And if I gave you pi, what would be the points and functions to show that pi is irrational?  

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