Derivative of lnx

This example demonstrates the derivative of the natural logarithm function lnx, including its graph and geometric interpretation. Key math concepts involved are the definition of derivatives, geometric meaning of derivatives, and properties of the natural logarithm function. GeoGebra commands used include Point, Tangent, and Slope, with objects like f (function), A (point), a (parameter), m (slope), and various text elements. It is suitable for high school and above students learning calculus, serving as an educational aid to understand the geometric significance of derivatives and the derivative characteristics of the natural logarithm function.