Math Problem Statement

Tìm hàm f : R→R thoả mãn (x −y)f(x+y)−(x+y)f(x−y) = 4xy(x2 -y2)∀x,y ∈ R

Solution

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Math Problem Analysis

Mathematical Concepts

Polynomials
Functional Equations

Formulas

Polynomial form
Functional equation manipulation

Theorems

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Suitable Grade Level

Undergraduate level