Hi guys! 1. The problem statement, all variables and given/known data Do you know how to get the cdf and pdf of the absolute difference of two iid standard uniform X1 and X2 : X = |X1 − X2| ? 2. Relevant equations Come across http://en.wikipedia.org/wiki/Triang...difference_of_two_standard_uniform_variables" we know that the cdf is 2x - x2 and the pdf is 2 -2x. How do we get/prove it? Thank you very much!