The joint cumulative distribution function for (X, Y) is given by F(x, y) = ( 1 - e-x/ID - e-y/l + e-lx+SyJ/I0)/10,001 (x)I10,oodY).
a. Find the joint density function of (X, Y).
b. Find the marginal density function of X .
c. Find the marginal cumulative distribution function of X .