Trapezoid Approximation to the Riemann Integral

This example demonstrates the trapezoidal method for approximating the Riemann integral. It involves core mathematical concepts such as trapezoids, step functions, arithmetic, complex numbers, reflection, and functions. The construction uses GeoGebra commands/objects like Point, TrapezoidalSum, Integral, f, A, B, n, a, g, b, c, d. Suitable for high school and above students learning calculus.