tractrix | โค้งจอมแห [คณิตศาสตร์๑๙ ก.ค. ๒๕๔๗] |
Tractrix | n. [ NL. See Tractor. ] (Geom.) A curve such that the part of the tangent between the point of tangency and a given straight line is constant; -- so called because it was conceived as described by the motion of one end of a tangent line as the other end was drawn along the given line. [ 1913 Webster ] |