水土
发表于 2025-3-26 21:53:40
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flaunt
发表于 2025-3-27 02:39:09
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腐蚀
发表于 2025-3-27 06:35:41
Undergraduate Texts in Mathematicshttp://image.papertrans.cn/l/image/586264.jpg
Decongestant
发表于 2025-3-27 11:46:26
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Directed
发表于 2025-3-27 14:40:31
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reserve
发表于 2025-3-27 19:33:21
Symmetric Matrices, in 3 dimensions is symmetry about the diagonal. We say that a matrix is . if the entry in the .th position in the .th column is the same as the entry in the .th position in the .th column, i.e., . = . for all .,
不利
发表于 2025-3-28 00:04:11
Classification of Quadric Surfaces,ond degree; for example,.The general form of the equation of a quadric surface is. where the coefficients ., and . are constants. We would like to predict the shape of the quadric surface in terms of the coefficients, much in the same way that we described a conic section in terms of the coefficients of an equation. in two variables.
Aggressive
发表于 2025-3-28 02:21:38
,Vector Geometry in ,-Space, , ≥ 4,dimensions. What begins as an alternative way of treating problems in analytic geometry becomes a powerful tool for investigating increasingly complicated phenomena, such as eigenvectors or quadratic forms, which would be difficult to approach otherwise.
卜闻
发表于 2025-3-28 09:47:19
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MUTED
发表于 2025-3-28 11:02:41
Transformations of the Plane,Recall the notion of a “function.” A function is a rule which assigns to each number some number. This suggests the following definition: . is a rule which assigns to each vector in the plane some vector in the plane.