Question: If the joint density function of a pair continuous random variables Y, and Y2 is given by e-(y1 + y2) for y1 > 0, y2

If the joint density function of a pair continuous random variables Y, and Y2 is given by e-(y1 + y2) for y1 > 0, y2 > 0 f (y1, y2) = elsewhere Y1 find the density function of U by using the method of transformations. Yi+ Y2

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