# Math Help - Joint probability density function

1. ## Joint probability density function

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 $\int_0^1 \int_0^1 kxy dydx=1$

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

2. Originally Posted by Kai
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 $\int_0^1 \int_0^1 kxy dydx=1$

For the (ii) am getting confused, what it wants me to do actually ?
I think the question is asking for F(X,Y).