| 单词 | discriminant |
| 释义 | discriminant Note the quadratic's discriminant equals a2(α–β)2 where α and β are the quadratic's root. The discriminant of the cubic ax3 + bx2 + cx + d = 0 equals a4(α–β)2(β–γ)2(γ–α)2 where α,β,γ are the cubic's roots, and higher degree polynomials have similarly defined discriminants. |
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