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1986 IMO Problems/Problem 5: Revision history

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31 July 2010

  • curprev 06:0406:04, 31 July 2010 Kennyworm talk contribs 299 bytes +299 Created page with 'Find all (if any) functions <math>f</math> taking the non-negative reals onto the non-negative reals, such that (a) <math>f(xf(y))f(y) = f(x+y)</math> for all non-negative <math…'
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