Derivative: The derivative measures how a function changes as its input (or variable) changes. It helps us find the rate of change at any given point on a graph.
dy/dx: This notation represents the derivative of y with respect to x. It tells us how much y changes for every small change in x, and it's commonly used when finding derivatives of functions.
Chain Rule: The chain rule is a method used to find the derivative of composite functions. It allows us to break down complex functions into simpler parts and calculate their derivatives separately.