Let the joint density function of X and Y be given by e-(u+÷) for 0 < x, y < ∞0, fx,y (x, y) : otherwise. (a) Byfinding the margina ucnSity jY (9), oNOW (b) (i) Fo , dotowmino S(), the conditional density of X aiven hat V Emplain without caleulation) why for 1. (ii) Caicuiale Te (c) Given that E[X] = 1 and E[Y] = 1, show that Cov(X,Y) = 1. %3D %3D Comment on the relationship between the variables X and Y.

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Q: 3. Let X and Y have the joint density SCxy if 0 1) ?

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