Trapezium Rule

This animation visualizes how the trapezium rule approximates the area under the curve y = x² + 1 from 0 to 2, showing that as the number of trapeziums increases from 2 to 8, the calculated area gets closer to the true value of 14/3. It concludes by demonstrating that halving the width of each trapezium reduces the approximation error by a factor of four.