3. The joint prob. density function of the randum variables X and y is given by friv(x,y)={tomy; 252,205 y XXXXXXXXXXDetermine the covariance funcion, Cxy 3.2. Find if the vandum variables X&l are...

3. The joint prob. density function of the randum variables X and y is given by friv(x,y)={tomy; 252,205 y 33 3.1. Determine the covariance funcion, Cxy 3.2. Find if the vandum variables X&l are Xorthogonal? Hint: Cxx = Rxy - E[*] E[], CxM ONT_ELEX] E [X] Rxy = E[xx] = S xy for (x,y) de dy