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Let X1 and X2 are two independent and identical distributed random variables each with pdf N/X f (xx ) = 1 e .x>0 2 TX

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Let X1 and X2 are two independent and identical distributed random variables each with pdf N/X f (xx ) = 1 e .x>0 2 TX Use the change of variable method (one-to-one transformation) to find the joint probability distribution for Y1 = X1 . Yz = X1 + X2 (with their ranges)

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