Sphere and Function Demonstration

This example demonstrates the 3D visualization of a sphere and its integration with function graphs. Core math concepts include sphere construction, exponential functions, trigonometric functions, and optimization problems. GeoGebra commands used are: Sphere, Center, xx, yy, zz, Move, a (slider), text1, text2, text3. Suitable for high school and above students to learn 3D geometry and function applications.