| 单词 | discriminating cubic |
| 释义 | > as lemmasdiscriminating cubic discriminating cubic n. Mathematics rare a cubic equation whose roots give the three principal curvatures of a quadric surface. ΚΠ 1862 G. Salmon Treat. Analytic Geom. Three Dimensions v. 58 If two roots of the discriminating cubic vanish, the equation..represents a cylinder whose base is a parabola. 1951 Biometrika 38 96 The λ's, and hence the W's, are obtained by solving the discriminating cubic of the ξ-cone. < as lemmas |
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