一、知识综述及能力要求椭圆是圆锥曲线的一种,既拥有圆锥曲线的共性,也有本身的特性.在掌握椭圆基本性质(范围、对称性、顶点坐标、离心率及其求法、相关量之间的数量关系等)的基础上,熟悉椭圆的焦半径公式的推导过程并能加以灵活运用,掌握直线与椭圆之间的位置关系这一类问题的求解思路,解决椭圆的弦长、中 First, the knowledge summary and ability requirements Ellipse is a conic, both with conic common, but also has its own characteristics.In mastering the basic properties of the ellipse (range, symmetry, vertex coordinates, eccentricity and its method of seeking, the amount of The relationship between the number of the relationship between the straight line and the ellipse), based on familiar with the derivation process of the coke radius formula of elliptical and can be flexibly used to grasp the location of the relationship between the straight line and the problem of such problems, to solve the chord length of the ellipse