Question: Please help with this 15. The joint cumulative distribution function of two random variables X and Y is given as follows 6cy Fxx (1, y)

Please help with this

15. The joint cumulative distribution function of two random variables X and Y is given as follows 6cy Fxx (1, y) = (1+2x) (1+3y) r 2 0 and y 2 0 0 otherwise Calculate f (r) without integrating

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