1 . 已知圆
:
(
),O为平面直角坐标系的原点,点
,M是圆
上的任意一点,线段
的垂直平分线与直线
交于点P
(1)求点P的轨迹E的方程.
(2)已知点A为轨迹E上异于顶点的任意一点,连接
并延长交轨迹E与于点B,点N是点B在x轴上的投影,连接
并延长交轨迹E于点C,若
,判断
是否为定值.若是,求出该定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a43c323561cb602689314bb83bff99f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1038157bf2a0b70de3553cadadbbf618.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83dfcf6112a1856cc3d2998ce0983771.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0f74432232d07b7d9c016df8ba6e3d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a2cda9e5690d90d24c318895db59a45.png)
(1)求点P的轨迹E的方程.
(2)已知点A为轨迹E上异于顶点的任意一点,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e68999360cfe7b7655728336749776c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b246aa3b56becc905d3fb64c6d5ec4a.png)
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2 . 已知点
,动点
满足:
.
(1)求P的轨迹C的方程;
(2)是否存在过点
的直线
与曲线C相交于
两点,并且曲线C上存在点Q,使四边形
为平行四边形?若存在,求出直线
的方程;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7af2742c3570c1dcbcf1e2a140c877ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/196702938eb0c06e2c8f88e1fdf69a60.png)
(1)求P的轨迹C的方程;
(2)是否存在过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71fb572a6f07dcade5332bea766020f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb398137779190b35492d9f06d5fbc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8431207f85ea2422a3678ca021e0c684.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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解题方法
3 . 已知曲线
是平面内到
和
的距离之和为
的点的轨迹.
(1)求曲线
的方程;
(2)斜率为1的直线与曲线
相交于点
,
,弦长
,求直线的方程;
(3)求斜率为1的直线交曲线
的弦的中点
的轨迹方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)斜率为1的直线与曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/1ef2df7e55835e21cb2527e99a35dde2.png)
(3)求斜率为1的直线交曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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4 . 已知椭圆
的左、右焦点分别为
,左、右顶点分别为
为椭圆上的动点(不与
重合),且直线
与
的斜率的乘积为
.
(Ⅰ)求该椭圆的方程;
(Ⅱ)已知
,过Q的直线与椭圆交于
两点,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d72d37ab3c6d3555cd89581c214455a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/800c5e266b4ad8462a46970f0a232d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46b053f98b1d05a2043e94eeaefea87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.png)
(Ⅰ)求该椭圆的方程;
(Ⅱ)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8396fe49ede192a26ef3c91ea12252f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1bc453cb750bc9b348fc682033feebb.png)
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2021-01-22更新
|
430次组卷
|
2卷引用:湖南省郴州市2020-2021学年高二上学期期末数学试题
名校
解题方法
5 . 在平面直角坐标系内,一动圆与圆
外切,同时与圆
内切.
(1)求动圆圆心
的轨迹方程;
(2)设该轨迹
与曲线
的交点为
、
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e303efb280b080d56f0e28f1e08e2be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9254e92d6198e87c383217b7a99ae4f9.png)
(1)求动圆圆心
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)设该轨迹
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ea6056aec5dbad9765ea05d2a769399.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/866b81a8384cce4f24867baca2e6820c.png)
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解题方法
6 . 已知点
,
,动点P满足直线
与直线
的斜率之积为
,设动点P的轨迹为曲线E,过点
作垂直于x轴的直线与曲线E相交于C,D两点,直线
与曲线E交于M、N两个不同点,与线段
交于一点(与端点C,D不重合).
(1)求曲线E的标准方程.
(2)当直线l与圆
相切时,四边形
的面积是否有最大值?若有,求出面积最大值及对应的直线l的方程;若没有,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383f12cb70ca55eba4ff012771dbfa9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3544997cc034ed882c0d0a3bdbf5f957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602baac86c2b1668ecdfadc8a5948885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d7d436bb96d03f111de6850cf2c7965.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(1)求曲线E的标准方程.
(2)当直线l与圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5627dee61ff1a179ed56a7e627927448.png)
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7 . 已知曲线
上的点D到点
的距离与到直线
:
的距离的比为
,点P为直线m上的一个动点,且过点M的直线l与曲线C交于A,B两点.
(1)求曲线C的方程;
(2)若
为等边三角形,求线段AB的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99296bab1b42898e7ca336a822510258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
(1)求曲线C的方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
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2021高三·上海·专题练习
8 . 设
是单位圆
上的任意一点,
是过点
与
轴垂直的直线,
是直线
与
轴的交点,点
在直线
上,且满足
.当点
在圆上运动时,记点M的轨迹为曲线
.
(1)求曲线
的方程,判断曲线
为何种圆锥曲线,并求其焦点坐标;
(2)过原点且斜率为
的直线交曲线
于
,
两点,其中
在第一象限,它在
轴上的射影为点
,直线
交曲线
于另一点
.是否存在
,使得对任意的
,都有
?若存在,求
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89e5a51d787d0fe371033ca55a181f94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过原点且斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce2790947716b1cfa9c5e7a65db4093.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218bb678422659b55d1ab5f9c41c8eff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
9 . 如图,在
中,
,
,
边上的中线长之和等于39.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/4db4a309-1a13-4a52-805c-b1588feb6191.png?resizew=132)
(1)求
重心
的轨迹方程;
(2)若M是(1)中所求轨迹上的一点,且
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a86cf51378ccec9eae5723f343ca7ed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ecbae225256ba1ad0f3a25dd64c1f0c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/4db4a309-1a13-4a52-805c-b1588feb6191.png?resizew=132)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)若M是(1)中所求轨迹上的一点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ac80e0dc929174bb1dc530113579ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d011d6ad89d0b033f96c2efbb314d78.png)
您最近一年使用:0次
2021-01-17更新
|
58次组卷
|
2卷引用:黑龙江省嫩江市高级中学2020-2021学年高二上学期期末考试数学(文)试题