(1)设P是抛物线
上的一个动点.
①求点P到点
的距离与点P到直线
的距离之和的最小值;
②若
,求
的最小值.
(2)已知抛物线
,A点的坐标为
.求抛物线上距离点A最近的点P的坐标及相应的距离
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
①求点P到点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16a46f03535c5af872fa8fa9f21a431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1e5eea5f7f98ca8632358b7e49ceb25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b787cc10801e88de109ceaa8b036c38b.png)
(2)已知抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b072ff6d1b83232bebd7d4709ffba4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d55bed96da7c7f4ec234a17043310c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d063ec7f9dbeba72fabf4437f9400e07.png)
23-24高二上·全国·课后作业 查看更多[2]
北师大版(2019) 选修第一册 数学奇书 第二章 圆锥曲线 §3 抛物线 3.2 抛物线的简单几何性质 第1课时 抛物线的简单几何性质(已下线)专题26 抛物线及其标准方程5种常见考法归类 - 【考点通关】2023-2024学年高二数学高频考点与解题策略(人教A版2019选择性必修第一册)
更新时间:2023-09-03 10:32:49
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
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