directrix

Phy. නියාමක අක්ෂය

Mat. නියාමකය

Definition:

Directrix (noun): A fixed line used in conic sections as a point of reference for determining the shape of a curve. In the context of a parabola, the directrix is a line parallel to the axis of symmetry and equidistant from the vertex, with the property that every point on the parabola is equidistant to both the focus and the directrix. In mathematics, the directrix plays a crucial role in defining the geometric properties and equations of conic sections.