名校
解题方法
1 . 已知抛物线C的方程为:
,点
(1)若直线
与抛物线C相交于A、B两点,且P为线段AB的中点,求直线
的方程.
(2)若直线
过
交抛物线C于M,N两点,F为抛物线C的焦点,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f902ed430056560024f937ba4b8a763.png)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0e8708ac4b5be5691d11125b337b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b644a3f89562ace96eaf660a4bd37b.png)
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2022-01-25更新
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3卷引用:云南省昆明市第三中学2021-2022学年高二下学期开学考试学科能力测数学试题