are Independently and Identically Distributed.
Z=|X-Y|.
Find the PDF of Z.
The joint PDF of this function is 1 as well. Through the graph, I found that the CDF of Z is
and PDF is
. However, I am not able to solve it through the joint density function of x,y. What are the limits in which the joint function should be integrated to get the CDF of Z?

