Ask Question. They are completely specified by their joint pmf pX,Y (x,y) = P{X = x,Y = y} for all x ∈ X, y ∈ Y Clearly, pX,Y (x,y) ≥ 0, and P x∈X P y∈Y pX,Y (x,y) =• Notation: We use (X,Y) ∼ pX,Y (x,y) to mean that the two discrete r.v.s have the Given two random uniform variables, U U and V V, that are uniformly distributed over [0,1], how do you calculate the joint pdf of X X, Y Y where X = F(U, V) X = F (U, V) and Y = G(U, V) Y = G (U, V) and where is the joint pdf zero. My question is whethe