Question 1

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Pe M = (0,+∞) definim legea de compozitie: x space ring operator space y space equals space e to the power of ln left parenthesis x right parenthesis times ln left parenthesis y right parenthesis end exponent space.
C u p l u l space left parenthesis space M comma space ring operator right parenthesis space e s t e space text grup comutativ end text.

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