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
Functional Equations
Variable Transformation
Formulas
Equation transformation techniques
Theorems
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Suitable Grade Level
Advanced Mathematics
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