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The Trapezoidal Rule for Increasing Functions


	Let be a partition of , with ; then: ≈ the sum of the rectangle areas + the sum of the triangle areas =.


	Contributed by: Soledad Mª Sáez Martínez and Félix Martínez de la Rosa
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Reference:

J. Urias, "Proof without Words: The Trapezoidal Rule (for Increasing Functions)," Mathematics Magazine, 68(3), 1995 p. 192.

Trapezoidal Rule (Wolfram MathWorld)

"The Trapezoidal Rule for Increasing Functions" from The Wolfram Demonstrations Project
http://demonstrations.wolfram.com/TheTrapezoidalRuleForIncreasingFunctions/

Contributed by: Soledad Mª Sáez Martínez and Félix Martínez de la Rosa

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