Question: Let X, Y have joint density fX, Y(x, y) = x + y, for 0 x,y 1, and fx, y (x, y) =

Let X, Y have joint density
fX, Y(x, y) = x + y,
for 0 ≤ x,y ≤ 1,
and fx, y (x, y) = 0 otherwise. Find the joint CDF, i.e., Fx, y (x, y) = P(X ≤ x, Y≤ y).

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