2.1 Solve the below problem {show all calculations). ( Let Y1 and Y2 be random variables with joint density function 2 053; 51, Uy21,0y2+y11 f (we) J = l 0: 1 elsewhere. The marginal density function of f(y1) : 2(1 yl), 0 g yl 5 1 Identify the distribution of the marginal density function foil) and use it to nd the E(Y1) and 1303)