1. Let X and Y have joint probability density function given by

f(x,y)= kxy, for 0<=x<=1 , 0<=y<=1.

0 elsewhere.

(i) Find the value of k.

(ii) Find the joint distribution for X and Y.

(iii)...

(i) I have been able to do it, using

For the (ii) am getting confused, what it wants me to do actually ?