Math Problem Statement
Tìm tất cả các hàm số f :R→R thoả mãn phương trình hàm: f (x+y)+xy= f(x)f(y),
Solution
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Math Problem Analysis
Mathematical Concepts
Functional Equations
Algebra
Formulas
f(x + y) + xy = f(x)f(y)
Theorems
Functional Equation Techniques
Suitable Grade Level
University Level - Advanced Mathematics
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