1. The problem statement, all variables and given/known data I am trying to find the critical points of the following hyperbolic function: f(x) = a / (b + x) 2. Relevant equations Critical points--> where f '(x) = 0 One of the points on the graph is a/2b 3. The attempt at a solution I am not sure how to proceed with this question. f '(x) = -a / (b + x)2 I attempted the quadratic formula with just the denominator, and the solution I came up with was x = -1.