| 释义 |
biflecnode Math.|baɪˈflɛknəʊd|
[f. bi-2 + flecnode.]
A point on a curve that is both a node and a point of inflexion for each branch passing through it. Hence biflecˈnodal a.
1874G. Salmon Analyt. Geom. (ed. 3) p. xvii, Number of points at which two tangents are biflecnodal. Ibid. 521 Biflecnodal points. 1879― Higher Plane Curves (ed. 3) 217 Such a node may be considered as the union of an ordinary node with (in the first case) a point of inflexion, and with (in the second case) two points of inflexion; and the node may be termed a flecnode or a biflecnode in the two cases respectively. |