Average Value via Integrals

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The average value of an integrable function on an interval can be defined using integrals: , or, equivalently, , so, for positive functions, the average value is the height of the rectangle with width that has the same area as the region betwen the graph and the interval on the axis. This Demonstration illustrates that fact.

Contributed by: Laura R. Lynch (May 2014)
Open content licensed under CC BY-NC-SA


Snapshots


Details

When "show rectangle" is checked, notice that the blue area is the same as the red area.



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