X and Y are discrete random variables with a joint density function as follow f(x, y) = 1) = {²+ ( x² + y) 0, (x² + y) x = 0,1,2; y = 0,1,2 Otherwise 1) Find the value of Cov[X, Y] 2) Find the value for both E(Y|X = 1) and E(X|Y = 2)

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