Derivatives are used to calculate the rate of change, growing or decreasing intervals, Lagrange’s Mean Value Theorem, Rolle’s Theorem, the point at which a tangent is parallel or perpendicular, the slope of a tangent or normal, and the approximate value of numbers, among other things. Our professionals explain these applications in simple and straightforward terms to help students grasp the key principles. Several examples are presented beneath each application to help students develop their conceptual understanding, regardless of their cognitive quotient.