1. The problem statement, all variables and given/known data given pdf: f(x) = 2/3x for 0<=x<=1 f(x) = 2/3 for 1<x<=2 f(x) = 0 elsewhere Find the CDF. 2. Relevant equations 3. The attempt at a solution I've found: F(x) = 0 for x<= 0 F(x) = 1 for x>=2 F(x) = (1/3)x2 for 0<=x<=1 and I found: F(x) = (2/3)x for 1<x<=2 However, the last bit is incorrect. It should be F(x) = (2/3)x -(1/3) I'm unclear as to why. I think it has something to do with solving for the constant of integration, but I'm not sure exactly.