Question: If p X,Y (x, y) = cxy at the points (1, 1), (2, 1), (2, 2), and (3, 1), and equals 0 elsewhere, find c.

If p X,Y (x, y) = cxy at the points (1, 1), (2, 1), (2, 2), and (3, 1), and equals 0 elsewhere, find c.

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