如所周知,曲线和方程的对应关系是解析几何的核心概念。为叙述方便,把统编高中课本第二册的有关内容复述如下: 在平面上建立了直角坐标系后,如果某曲线(看作适合某种条件的点的轨迹)上的点与某个二元方程f(x,y)=0的解建立了如下的对应关系: As is well known, the correspondence between curves and equations is the core concept of analytic geometry. For the sake of narrative convenience, the relevant contents of the second edition of the senior high school textbook are rephrased as follows: After a rectangular coordinate system is established on the plane, if the point on the curve (as the trajectory of the point suitable for a certain condition) and a certain two The solution of the meta-equation f(x,y)=0 establishes the following correspondence: