2. Can the function F(x,y)={1e(x2+y),0,x0,y0otherwise be the joint cdf of some two random variables X and Y. If it can be, what would FX(x) then be? Hint: If two random variables X and Y had joint probability distribution functions FXY(x,y)= F(x,y), what would P(0<X1,0<Y1) be?.