Home/Calculus/Introductory Ideas/Average Rate of Change; Better Estimate for df/dx at x=aB. Average Rate of Change; Better Estimate for df/dx at x=aAverage rate of change and better estimates for the derivative.Topics in this SectionB.1 Average Velocity for a TripB.2 Average Velocity Over Any IntervalB.3 Generalizing Average Rate of ChangeB.4 Lab 1 Introduction: Approximate & Bound Error for df/dxB.5 Lab 1 Activity: Approximate & Bound Error of df/dx