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勾配

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The gradient, represented by the blue arrows, denotes the direction of greatest change of a scalar function. The values of the function are represented in greyscale and increase in value from white (low) to dark (high).

勾配（グラディエント）の数学的定義と多変数解析における役割

勾配グラディエントベクトル解析偏微分
2026年8月12日続きを読む →
The segment AB is perpendicular to the segment CD because the two angles it creates (indicated in orange and blue) are each 90 degrees. The segment AB can be called the perpendicular from A to the segment CD, using "perpendicular" as a noun. The point B is called the foot of the perpendicular from A to segment CD, or simply, the foot of A on CD.[1]

幾何学における垂直の概念と性質基礎から応用まで

幾何学垂直直交直角
2026年8月12日続きを読む →