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保持比例

Author:hjyanghj

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斜率的值
折扣
常见四边形是否是双心四边形
圓的切線方程
百分數及其應用

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向量分解
線性迴歸_SSE
九點圓
circle
指数函数的副本

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Similarity Transformation or Similarity
Special Points
Linear Programming or Linear Optimization
Definite Integral
Vectors 3D (Three-Dimensional)

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