A Cool Functional Equation
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A Functional Equation from Putnam and Beyond
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Solving a Functional Equation | f(x)+f(x-1)=x^2
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A Functional Equation Problem
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An Interesting Homemade Equation
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A Nice Functional Equation [f(x+y)=f(x)+f(y)+2xy]
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Functional Equation
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Solving a Functional Equation
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