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Omni-MATH / Find all functions f from the set R of real numbers into R which satisfy for all x,y,z∈R the identity f(f(x)+f(y)+f(z))=f(f(x)−f(y))+f(2xy+f(z))+2f(xz−yz). · Discussion

Discussing Find all functions f from the set R of real numbers into R which satisfy for all x,y,z∈R the identity f(f(x)+f(y)+f(z))=f(f(x)−f(y))+f(2xy+f(z))+2f(xz−yz). · Omni-MATH

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