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f-R-R-f-x-f-x-f-y-f-x-2-y-x-y-R-f-x-




Question Number 10854 by Joel576 last updated on 27/Feb/17
f : R → R  f(x . f(x) + f(y)) = (f(x))^2  + y          x,y ∈ R    f(x) = ??
f:RRf(x.f(x)+f(y))=(f(x))2+yx,yRf(x)=??
Answered by bahmanfeshki last updated on 02/Mar/17
  f(x)=x
f(x)=x

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