1本单元知识网络2重点、难点、热点分析重点:圆锥曲线的两种定义、标准方程及次标准方程(中心在(x0,y0),对称轴平行于坐标轴的圆锥曲线的方程)、几何性质;特征参数a,b,c,e,p的几何意义及相互间的关系;直线与圆锥曲线位置关系的判断与应用;主要数学思想方法(数形结合思想、函数 1 This Unit Knowledge Network 2 Highlights, Difficulties, Hotspots Analysis Focus: Two definitions of conic curves, standard equations and subnormal equations (center at (x0, y0), symmetry axis parallel to the equation of the conic section of the axis), geometry Nature; geometrical meanings of characteristic parameters a, b, c, e, p and their relationship; judgments and applications of positional relationship between straight and conic curves; main mathematics ideas and methods (combination of numbers and ideas, functions