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时间:2020-07-07
《高考数学总复习讲义 第十讲 圆锥曲线(一)椭圆.doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、第十讲圆锥曲线一(椭圆)一【考点提示】(一)定义:1.第一定义:__________________________________________________________________________________________________2.第二定义:__________________________________________________________________________________________________(二)方程:1.标准方程:__________________________________
2、________________________________________________________________2.参数方程:__________________________________________________________________________________________________(三)性质:1.范围:________________________________________________2.离心率:________________________________________________
3、__________________________________________________3.准线:_________________________________________________4.焦半径:____________________________________________________________________________________________________________________________________________________________________________
4、________________________5.通径:_________________________________________________6.焦准距:_______________________________________________7.切线方程:________________________________________________8.弦长公式:________________________________________________(四)点与椭圆的位置关系:____________________________
5、_______________________________________________________________________________________________________________________(五)焦点三角形:1.顶角:_________________________________________________2.焦点三角形面积:_________________________________________3.向量,模长:_________________________________________
6、____________________________________________________(五)常见做法和结论:1.知道求椭圆中的量,椭圆标准方程:_________________________________________________2.椭圆焦点位置不确定,如何设方程:_________________________________________________3.与共焦点的椭圆:_________________________________________________4.与有相同离心率的椭圆:_____________
7、____________________________________5.椭圆中所构成的菱形的内角与椭圆的离心率之间的关系:_________________________________________________6.焦点三角形顶角的范围:_________________________________________________7.椭圆长轴端点为,是否存在,使最大,最小?这点位置在哪里?最大,小角如何求?_____________________________________________________________________
8、__________________________
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