Integration Is a Sum

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Integration is a kind of sum. It is easy to realize this by comparing the integration of the function with the formula for the area of a rectangle, (base times height). Integration is more general, allowing you to find the area under curves such as a sine wave or a parabola.

Contributed by: Daniel de Souza Carvalho (March 2011)
Open content licensed under CC BY-NC-SA


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The functions are: constant: sine: parabolic:



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