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find-all-functions-f-R-R-so-that-x-y-f-x-y-x-y-f-x-y-4xy-x-2-y-2-x-y-R-




Question Number 87459 by john santu last updated on 04/Apr/20
find all functions f :R →R  so that (x−y)f(x+y) −(x+y) f(x−y) =  4xy (x^2 −y^2 ) ∀x,y ∈R
findallfunctionsf:RRsothat(xy)f(x+y)(x+y)f(xy)=4xy(x2y2)x,yR

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