Math Problem Statement
Tìm hàm f : R → R thoả mãn (x − y)f(x + y) − (x + y)f(x − y) = 4xy(x 2 - y 2 )∀x, y ∈ R.
Solution
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Math Problem Analysis
Mathematical Concepts
Functional Equations
Formulas
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Theorems
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Suitable Grade Level
Advanced Mathematics
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