1 . 已知抛物线
,O点为坐标原点,过点
的直线交抛物线于A,B两点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/e3c05625-acba-4dab-8a5a-1fdb57ca9e6d.png?resizew=131)
(1)求抛物线的方程;
(2)以点M为圆心的圆与抛物线有四个交点分别为P,Q,S,T,当等腰梯形
的一条对角线的斜率为2时,求圆M的半径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/363598fd39f2269952dc6ddd1201346c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ccc37b189fa2cbc269ca0b233dac37.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/e3c05625-acba-4dab-8a5a-1fdb57ca9e6d.png?resizew=131)
(1)求抛物线的方程;
(2)以点M为圆心的圆与抛物线有四个交点分别为P,Q,S,T,当等腰梯形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc864d9ed17dc179305aa15090fe3eda.png)
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2022-12-06更新
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315次组卷
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4卷引用:河南省濮阳市2022-2023学年高二上学期期中数学试题