1. The problem statement, all variables and given/known data F(x)=k(1-1/x2), 1[itex]\leq[/itex]x<2 2. Relevant equations 3. The attempt at a solution How do I get the probability density function here? Simply take the derivative of this function ? 1[itex]\int[/itex]2 = k(1-1/x2) Supposed to be 1 at the bottom and two at the top.