数Ⅱ 積分 その⑬ ～3次曲線と直線とで囲むs～
Synopsis
紛らわしい公式が多く出てくるが、「2次式なら3乗」「3次式なら4乗」 の法則は覚えやすい。
![Area enclosed by two cubic functions [Understanding integration methods in a fun way]](https://i.ytimg.com/vi/qZ7rHsoAlB8/hq720.jpg?sqp=-oaymwEcCNAFEJQDSFXyq4qpAw4IARUAAIhCGAFwAcABBg==&rs=AOn4CLDx6_AQPO4lw6HdNgdMxxfmR7iAmQ)
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