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运用直线的标准式参数方程 ,可以将直角坐标系内的某些问题化为数轴上的问题 ,从而在解决直线与圆锥曲线关系的问题中有其独特的作用 .本文拟从直线标准式参数方程的概念和基本运用两方面阐述这一降维工具 .1 深刻理解参数方程的概念是灵活运用的前提1.1 直线标准式参数方程
Using the standard parametric equations of the straight line, some problems in the Cartesian coordinate system can be converted into problems on several axes, and thus have unique effects in solving the problem of the relationship between the straight line and the conic curve. This paper proposes a linear parametric equation The concept and the basic application of this dimension reduction tool are explained in two aspects. 1 The concept of parametric equations is deeply understood as a prerequisite for flexible use. 1.1 Linear Standard Parametric Equations