Trapezoidal rule: Difference between revisions

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[[Image:Composite trapezoidal rule illustration.png|right|thumb|Illustration of the composite trapezoidal rule (with a non-uniform grid).]]
[[Image:Trapezoidal rule illustration small.svg|right|thumb|Illustration of the composite trapezoidal rule (with a uniform grid).]]
In [[mathematics]], the '''trapezoidal rule''' (also known as the '''trapezoid rule''', or the '''trapezium rule''' in [[British English]]) is an approximate way to calculate the [[integral|definite integral]]
 
:<math> \int_{a}^{b} f(x)\,dx.</math>