名校
解题方法
1 . 如图,已知点
在半圆
:
上一点,过点P作抛物线C:
的两条切线,切点分别为A,B,直线AP,BP,AB分别与x轴交于点M,N,T,记
的面积为
,
的面积为
.
![](https://img.xkw.com/dksih/QBM/2022/2/16/2917780834074624/2918913037582336/STEM/69b2636d-dd93-4c06-b114-72d6a5764755.png?resizew=182)
(1)若抛物线C的焦点坐标为(0,2),求p的值和抛物线C的准线方程:
(2)若存在点P,使得
,求p的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f2c1a1c868218dd0be4e77ca9cfe84c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c2f156b05838deaae6a35acad242af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c0f9cbd5fce2c4819aadefcf10dcd4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd68201c2f21edf7575166ce1ef82ae3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://img.xkw.com/dksih/QBM/2022/2/16/2917780834074624/2918913037582336/STEM/69b2636d-dd93-4c06-b114-72d6a5764755.png?resizew=182)
(1)若抛物线C的焦点坐标为(0,2),求p的值和抛物线C的准线方程:
(2)若存在点P,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/506c25a883f7d0e2342419e1e9f6b142.png)
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2022-02-18更新
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1258次组卷
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3卷引用:四川省成都市石室中学2022届高三专家联测卷(五)数学(理)试题