Application of Derivatives
We can use derivatives to measure rate of change of quantities, to find increasing and decreasing functions, to find tangents and normals etc.
• If a quantity y varies with another quantity x, satisfying some rule y = f(x), then dy/dx represents the
- We can apply derivatives to determine approximate value of certain quantities and to find maximum and minimum values of a function in an interval.
- The differential of y is denoted by dy and is defined by dy = f ′(x) dx or dy = f ′(x) ∆x, where dy approximately equ