5 (5 points). Show that the function below is the PDF of R, the distance between the epicenter of an earthquake and the site of a dam, where the epicenter is equally likely to be at any location along a neighboring fault AB. (Hint: The location of the epicenter is uniformly distributed on [-1/2, 1/2].) fR(r) = 2r T (r2 - d2)-1/2 dersro Site ro Fault B AL 1/2 1/2