| 单词 | trident curve |
| 释义 | > as lemmastrident curve 3. Geometry. Name of a plane cubic curve of a form suggesting a three-pronged weapon; also trident curve. Also called Cartesian parabola (parabola n. 1b). ΘΚΠ the world > relative properties > number > geometry > curve > [noun] > having specific shape trident1710 cardioid1747 J-curve1916 snowflake curve1956 1710 J. Harris Lexicon Technicum II Trident is a Name given by Sir Is. Newton to that kind of Parabola, by which D'Cartes constructed Equations of six Dimensions. 1795 C. Hutton Math. & Philos. Dict. II. 191 Cartesian Parabola..xy = ax3 + bx2 + cx + d..being Newton's 66th species of lines of the 3d order, and called by him a Trident. 1864 A. Cayley Coll. Math. Papers V. 364 The Trident Curve. < as lemmas |
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