Question: 26. Let X and Y be continuous random variables with joint probability density function f (x, y). Let Z = Y/X, X ,= 0. Prove

26. Let X and Y be continuous random variables with joint probability density function f (x, y). Let Z = Y/X, X ,= 0. Prove that the probability density function of Z is given by fZ(z) = E ∞ −∞ |x|f (x, xz) dx.

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