直线性

MASS::lda(Y~.,data) Linear discriminant analysis MASS::qda(Y~.,data) Quadratic Discriminant Analysis class::knn(X,X,Y,k,prob) k-Nearest Neighbour(X 為變數資料;Y 為分類)

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在点 不可导，则曲线 在点

所以这两条直线与第三条直线所成角都是 90°, (结论).

Sample a point in the plane, iterates Newton's Method on f(z) using that point as the initial value, and colors the point based on which of the four roots the iterates converge

stochastic activator-inhibitor systems without saturation and ones with saturation in time-invariant or time-variant domains

非线性物理： 分形物理 分形物理 动力系统映射：.

dimensionality, the order of ramification, the connectivity, the lacunarity等。.