4.1

面积问题

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$$\rightleftharpoonup{xx}$$ $$\longleftharp{xx}$$, $$\longrightharp{xx}$$,

对于边界为直线的区域,面积的确定相对简单,因为可以直接应用矩形、三角形或多边形的几何公式。然而,当区域的边界呈现为曲线时,例如函数曲线下方的区域面积,传统的几何方法便难以直接适用。

19973_PT_Equation_1.svg

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19973_PT_Equation_2.svg

面积问题的核心在于寻找一种能够系统测量此类区域大小的方法。解决该问题的一种基本思路是采用近似方法。与其起初就试图精确…

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