Let X and Y be random variables having joint probability density function f(x)=x+y,0≤x≤ 1, 0 ≤ y ≤1 x+y, and0, otherwise Find a) E[X], b) E[Y], c) E[XY], d) E[X + Y], e) Var[X], f) Var[Y], g) Cov[X, Y] h) p = Corr[X, Y]​