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Author:石川英樹

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円の伸開線
sine-wave
接点の作る円は内接円
二次曲線と離心率
フーリエ級数展開

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関数の積分(体積)
面積が１の三角形
円錐の切断(軸に垂直な平面)
楕円の中点の軌跡
分数のひき算(分母が同じばあい)

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Solids or 3D Shapes
Area
Power Functions
Sphere
Perimeter

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