Introduction to Partial Derivatives

This example demonstrates the geometric meaning of partial derivatives by visualizing the direction of the derivative at a point on a function. Key math concepts include derivatives, vectors, function graphs, and linear equations. Construction highlights the use of GeoGebra commands like Vector and Line, along with objects such as f (function), f_x (x-direction partial derivative), and f_y (y-direction partial derivative). Suitable for university-level calculus beginners or teaching purposes.