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黎曼和

出自維基百科,自由嘅百科全書
四種計算曲線面積近似值嘅方法

黎曼和Riemann sum)係一種用嚟計積分近似值嘅方法,會用有限嘅和嚟估算。

要計呢個總和,首先將要計算嘅區域分割成唔同形狀(長方形梯形拋物線三次函數),當中唔同形狀相加同原本嘅形狀差唔多,然後計算每個形狀嘅面積,再將佢哋加埋一齊。呢種方法可以喺唔容易用微積分基本定理解析解嘅時候用嚟估算定積分

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