I've been trying to solve this question on joint probability. I have problem mainly because I keep getting the denominator that scales up to infinity. I understand that y can be infinitely small to offset. But I am unsure how this can be done. Anyone can help me out on this? Thanks!!
The joint density function of X and Y is given by
f(x,y) = (15x/2) (2-x-y) for x>0, y<1 and 0 otherwise