Determine the covariance for the joint probability density function f subscript X Y end subscript (x comma y )space equals space c times x times y over the range 0 < x < 16 and 0 < y < x. Hint: you need to first find the value of c using the second property in eq. (5.2) of the textbook, and then the expected values of X, Y, and XY using equations (5.3), (5.4), and (5.14), and the covariance from (5.15). Calculate up to 2 decimal points.