Re: ISI ME I, 2011 doubts

Posted by Sinistral on
URL: http://discussion-forum.276.s1.nabble.com/ISI-ME-I-2011-doubts-tp7580534p7580539.html

10) replacing all x by y and all y by x will again give the same equation.
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 "You don't have to believe in God, but you should believe in The Book." -Paul ErdÅ‘s