Numerical Derivative Demo

This example illustrates the concept of numerical derivatives by dynamically adjusting a point to show how the slope of the tangent changes. It involves core math concepts like derivative definition, tangent slope, coordinate transformations, and matrix operations. Constructed using GeoGebra commands such as Textfield, Point, Tangent, Slope, Segment, and If to visualize function graphs, dynamic tangents, and slope calculations. Suitable for high school students and beginners in calculus learning derivative concepts and calculations.