微び分ぶん係けい数すう

noun

derivative; differential coefficient

Mathematical term for the derivative of a function at a point, often used in calculus contexts.

• この関かん数すうのある点てんにおける微び分ぶん係けい数すうを求もとめよ。

  Find the derivative of this function at a given point.

• 微び分ぶん係けい数すうは接せっ線せんの傾かたむきを表あらわす。

  The differential coefficient represents the slope of the tangent line.