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Random Variableshard
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Let XXX and YYY be random variables with joint PDF f(x,y)=xe−x(y+1)f(x, y) = xe^{-x(y+1)}f(x,y)=xe−x(y+1) for x>0,y>0x > 0, y > 0x>0,y>0. What is the marginal PDF of XXX?