trapezoidal rule
A surname from Old English.
(mathematics) A method of finding an approximate value for a definite integral, based on dividing the area under the graph of the function into a series of strips, each of which is approximately a trapezoid, and summing the area of all the trapezoids to approximate the area.
(historical) An early device for observing individual nuclear disintegrations.
(mythology) The Ancient Roman god of seasons, change, and plant growth, capable of changing his form at will.
微積分の授業で、関数が解析的に積分するには複雑だったので、定積分を概算するために台形公式を使いました。
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