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	A Functional Equation.		1997-02-26
		From Ronald Lui: Find all functions f:S --> S statisfying the two conditions: 1)f(x+f(y)+xf(y))=y+f(x)+yf(x) for all x and y in S 2)f(x)/x is strictly increasing on each of the interval -1 Answered by Saroop Kaul and Chris Fisher.

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