Suppose X1, X2 have the joint probability density function f($1, T2) = 2, for 0

Suppose Xl,X2 have the joint probability density function for O 4:r2 4, and 0 elsewhere. What is Cov(Xl , X2) ? Note: Please round the answer to three decimal places. 0 0.038 0 0.053 0 0.083 0 0.111