q(x):This term represents a mathematical function that takes an input value, x, and returns the output value based on a specific rule or equation.
Tangent line: This term refers to a straight line that touches a curve at only one point. The slope of this tangent line at each point gives us the derivative of the curve at that point.
Chain rule: This term describes a rule in calculus used for finding derivatives of composite functions, where one function is nested inside another. It helps break down complex functions into simpler parts for differentiation.