Trapezoidal rule 梯形公式
(重定向自Trapezoid method)
In mathematics, and more specifically in numerical analysis, the trapezoidal rule (also known as the trapezoid rule or trapezium rule) is a technique for approximating the definite integral
The trapezoidal rule works by approximating the region under the graph of the function
as a trapezoid and calculating its area. It follows that