#### Derivatives Concepts: Recap

- From the previous notes 1.1 Derivatives Basic Concepts – 1 and 1.2 Derivatives Basic Concepts – 2, we know that derivatives are function that represents its original function’s rate of changes.
- Mathematically we denote the derivative function as

where the original function is y=f(x).

- It is also the gradient of the tangent line to f(x).