Derivative at Point, Absolute Value Function

This example demonstrates the dynamic change of a function's derivative at point A by moving the red dot and adjusting parameter h, along with the effect of the absolute value function. Key math concepts include derivatives, parametric curves, piecewise functions, line segments, and exponential functions. Constructed using GeoGebra commands like Point, Line, and Textfield, with objects such as f, A, h, b, B, a. Suitable for high school and above to explore the geometric meaning of derivatives and functional properties.