Area Under a Function: Riemann, Trapezoid, Integral

This example demonstrates how to calculate the area under a function's curve using Riemann sums, trapezoidal sums, and definite integrals. Key math concepts include Riemann sums, trapezoidal approximation, integral calculus, and function graphing. It is constructed using GeoGebra commands like Integral, TrapezoidalSum, RectangleSum, and Textfield, with parameters a, b, c, lftx, rtx. Suitable for high school and above students learning calculus, helping them visualize and compare different integration methods.