2005/07/05 | 判别式[Discriminant]
类别(∑〖数学〗) | 评论(0) | 阅读(27) | 发表于 20:09
A discriminant is a quantity (usually invariant under certain classes of transformations) which characterizes certain properties of a quantity's roots. The concept of the discriminant is used for binary quadratic forms, elliptic curves, metrics, modules, polynomials, quadratic curves, quadratic fields, quadratic forms, and in the second derivative test.

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