1 . 已知平面内一动点
与两定点
和
连线的斜率之积等于
.
(Ⅰ)求动点
的轨迹
的方程;
(Ⅱ)设直线
:
(
)与轨迹
交于
、
两点,线段
的垂直平分线交
轴于点
,当
变化时,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a64dee5dbd737e253ab289b5d6d735.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231f017dcf8aba8a721ee3d6bd301adf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.png)
(Ⅰ)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(Ⅱ)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54479885d4ab2f717d2e97718da04b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0baedc4d7e690ab3f7d80d30ba0a9efe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
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2017-04-20更新
|
360次组卷
|
6卷引用:2017届湖南省娄底市高考仿真模拟(二模)数学(文)试卷
2017届湖南省娄底市高考仿真模拟(二模)数学(文)试卷2017届湖南省长沙市高三第二次模拟考试数学(文)试卷福建省莆田第六中学2017届高三下学期第一次模拟(期中)数学(文)试题四川省成都市锦江区四川师范大学附属中学2019-2020学年高二下学期期中数学文科试题陕西省延安市黄陵县中学2021-2022学年高二上学期期末文科数学试题(已下线)第三章 圆锥曲线单元测试(巅峰版)-【冲刺满分】2023-2024学年高二数学重难点突破+分层训练同步精讲练(人教A版2019选择性必修第一册)
2 . 已知
,点B是
轴上的动点,过B作AB的垂线
交
轴于点Q,若
.
![](https://img.xkw.com/dksih/QBM/2013/4/19/1571189377703936/1571189383446528/STEM/58aada2443ee45c0b9f1e4d783785a0d.png?resizew=234)
(1)求点P的轨迹方程;
(2)是否存在定直线
,以PM为直径的圆与直线
的相交弦长为定值,若存在,求出定直线方程;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4532879711babba5dedf6bcea14a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/117670fce6419cb0acf919486ef82e4c.png)
![](https://img.xkw.com/dksih/QBM/2013/4/19/1571189377703936/1571189383446528/STEM/58aada2443ee45c0b9f1e4d783785a0d.png?resizew=234)
(1)求点P的轨迹方程;
(2)是否存在定直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b53b86bd516400d6fa7dabb3603f31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b53b86bd516400d6fa7dabb3603f31.png)
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14-15高三上·湖南娄底·阶段练习
3 . 如图,过原点的直线
与圆
交于
两点,点
在第一象限,将
轴下方的图形沿
轴折起,使之与
轴上方的图形成直二面角,设点
的横坐标为
,线段
的长度记为
,则函数
的图象大致是( )
![](https://img.xkw.com/dksih/QBM/2015/6/15/1572123048148992/1572123053998080/STEM/dd50a57fe1cd475297b51f1104d12e23.png?resizew=165)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://img.xkw.com/dksih/QBM/2015/6/15/1572123048148992/1572123053998080/STEM/dd50a57fe1cd475297b51f1104d12e23.png?resizew=165)
A.![]() | B.![]() |
C.![]() | D. ![]() |
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