Integration and the Trapezium Rule

This demonstrates how an integral can be approximated by various means, either by using rectangles or trapeziums to approximate the area.

Change the function and slide the points

and

to define the integral to be approximated. The parameter

says how many strips to use, the parameter

says at what height to draw the strips for the rectangular approximation:

means to use the height at the left-hand edge of the strip and

at the right-hand edge with other values in between.

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