名校
解题方法
1 . 如图,已知直线与抛物线
相交于
两点,且
,
交
于
,且点
的坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/22372c79-3577-4e65-b098-d82b49297252.jpg?resizew=172)
(1)求
的值;
(2)若
为抛物线的焦点,
为抛物线上任一点,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cee097d4fe948c3d4f1b5c28b24adf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07fe34d47ef23e8884a5c0404e54ef54.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/22372c79-3577-4e65-b098-d82b49297252.jpg?resizew=172)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de5b09f98a133ca40031b74e5a2eb842.png)
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2018-02-13更新
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583次组卷
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2卷引用:安徽省六安市第一中学2017-2018学年高二上学期期末考试数学(文)试题