Regression software programs graph the sample points and give the (cost-function) formula of the straight line that best fits the points.
回归软件程序将样本点用图表示，并且给出最拟合样本点的直线的价值函数公式。
The paper base on the engineering, analyzed the mechanical perforce of the high-pier curved bridge, and summarized the advanced replacing curved by straight line formula for high-pier curved bridge.
本文从工程实践出发，分析了高墩小半径曲线梁桥的力学特性，提出了高墩曲线梁桥以直代曲的判别公式。
Via an infinitesimal method, the author offers a computing formula for the moment of inertia of mass curves and mass cubes against any straight line in Euclidean space.
应用微元法给出了在三维欧氏空间中质量曲线和质量立体对任意一条直线的转动惯量的计算公式，并给出了对坐标轴的转动惯量的简化计算公式。
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