Question: Show that the function is a joint density function and find the required probability. f(x, y) = 7(9-x-y), 0 x 3, 3 y 6 elsewhere

Show that the function is a joint density function and find the required probability.

f(x, y) = 7(9-x-y), 0 x 3, 3 y 6 elsewhere 0,

f(x, y) = 7(9-x-y), 0 x 3, 3 y 6 elsewhere 0, P(0 x 1, 4 y 6)

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