Dynamic Geometric Illustrator of a Function's Derivative at a Point

This example demonstrates the derivative of a function at a specific point using dynamic geometry, illustrating the relationship between the tangent line, secant line, and the function graph. Key math concepts include derivative, secant line, tangent function, and slope. It utilizes GeoGebra commands Tangent, Slope, Textfield, and Intersect with objects like a, f, A, g, m, InputBox1, InputBox2, button1, f', h, B, b. Suitable for high school mathematics education to understand the geometric meaning and dynamic variation of derivatives.