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6th Mathematical Contest of Friendship in Honor and Memory of Grand Duchy of Lithuania 28 SeptemberDetermine all functions f : R → R such that f (xy + f (x)) = xf (y) + f (x) holds for any x, y ∈ R.
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Document Date: 2015-11-13 07:40:38
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6th Mathematical Contest of Friendship in Honor and Memory of Grand Duchy of Lithuania 28 SeptemberDetermine all functions f : R → R such that f (xy + f (x)) = xf (y) + f (x) holds for any x, y ∈ R.