名校
1 . 如图,抛物线
的焦点为
,取垂直于
轴的直线于抛物线交于不同的两点
,过
作圆心为
的圆,使抛物线上其余点均在圆外,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/10/80a14d3c-47c6-4d51-baf0-15b0209d0414.png?resizew=352)
(1)求抛物线
和圆
的方程;
(2)过点
作倾斜角为
的直线
,且直线
与抛物线
和圆
依次交于
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ea1be9b9b6bb12afa7e1ce703d1603.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5421a28dc3675ae20190d6090793246e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7677fad27034a7220e207d434cefffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7677fad27034a7220e207d434cefffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92d744c48d8927b978dcb7d4ee88fdb2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/10/80a14d3c-47c6-4d51-baf0-15b0209d0414.png?resizew=352)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ad2aae491b351640bae59209d2358ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21543d22e364aeae9e6393bea5ed943a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74916de8e7915d2b524d491353358a86.png)
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2016-12-04更新
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541次组卷
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4卷引用:2017届湖南省常德市第一中学高三第七次月考(b)数学(文)试卷