名校
解题方法
1 . 在平面直角坐标系
中,动点
在圆
上,动点
在直线
上,过点
作垂直于
的直线与线段
的垂直平分线交于点
,且
,记
的轨迹为曲线
.
(1)求曲线
的方程.
(2)若直线
与曲线
交于
两点,
与曲线
交于
两点,其中
,且
同向,直线
交于点
.
(i)证明:点
在一条确定的直线上,并求出该直线的方程;
(ii)当
的面积等于
时,试把
表示成
的函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5598f12c9128ec7514708db3b3c54bba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cb633c0e8698fc28359c61d4518088b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/182a54447325faa238a34a1595538620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb7961cbe98aac6a5fdee94582c341b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f05ff85be64d2e650abb945447859c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ceb38561cc6074e7b35206376561283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
(i)证明:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
(ii)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7d480e8b2c516612b47a19cb62d9bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64da75a02173c2a5eb40f4c68d0f4f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2024-04-19更新
|
522次组卷
|
3卷引用:宁夏回族自治区石嘴山市第三中学2024届高三第四次模拟考试理科数学试题
2 . 如图,已知直线
与抛物线
和圆
都相切,F是
的焦点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/b9056114-28f9-430d-ac4d-a6eb106a4db6.png?resizew=143)
(1)求m与a的值;
(2)设A是
上的一动点,以A为切点作抛物线
的切线
,直线
交y轴于点B,以
为邻边作平行四边形
,证明:点M在一条定直线上;
(3)在(2)的条件下,记点M所在的定直线为
,直线
与y轴的交点为N,连接
交抛物线
于
两点,求
的面积S的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91333381c13fc15114df61ad4143b7fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52b6833c187958fd81a00fc33eb7b5d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611e141db6bd44e32d1a510549ea5255.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/b9056114-28f9-430d-ac4d-a6eb106a4db6.png?resizew=143)
(1)求m与a的值;
(2)设A是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b05d2adf289a6f75d459d03c6f2159d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f98d8cf4f5eded4d4d058b6dd311a72f.png)
(3)在(2)的条件下,记点M所在的定直线为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd8cb171425253834dfd7fa1a9da9ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8428037a379bcd01cfffd5aa9434dc9.png)
您最近一年使用:0次
名校
解题方法
3 . 如图,
为坐标原点,抛物线
的焦点是椭圆
的右焦点,
为椭圆
的右顶点,椭圆
的长轴
,离心率
.
![](https://img.xkw.com/dksih/QBM/2020/11/3/2585241444573184/2585610113138688/STEM/202a8c7b0c5c424bb95b0768fdcfd61f.png?resizew=265)
(1)求抛物线
和椭圆
的方程;
(2)过
点作直线
交
于
两点,射线
,
分别交
于
两点,记
和
的面积分别为
和
,问是否存在直线
,使得
?若存在,求出直线
的方程;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f80080fac68745fe783b879cccb6140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a2cfc8743c915f45bdccca70ab16648.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.png)
![](https://img.xkw.com/dksih/QBM/2020/11/3/2585241444573184/2585610113138688/STEM/202a8c7b0c5c424bb95b0768fdcfd61f.png?resizew=265)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcc869125145c0139d92490a41bd3918.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807ca16360c0cca436e59d4be98f626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97e50a8cb65a2b304ed8ed5739ff90b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2020-11-04更新
|
1006次组卷
|
4卷引用:宁夏银川市第二中学2023-2024学年高二上学期期中考试数学试题
宁夏银川市第二中学2023-2024学年高二上学期期中考试数学试题湖北省黄石市大冶市第一中学2019-2020学年高三理科复读班12月月考数学试题(已下线)第九单元 解析几何 (A卷 基础过关检测)-2021年高考数学(理)一轮复习单元滚动双测卷江西省鹰潭市2021届高三高考二模数学(理)试题
12-13高二下·甘肃天水·期末
解题方法
4 . 曲线C上任一点到定点
的距离等于它到定直线
的距离.
(1)求曲线C的方程;
(2)经过P(1,2)作两条不与坐标轴垂直的直线
分别交曲线C于A、B两点,且
,设
是AB中点,问是否存在一定点和一定直线,使得M到这个定点的距离与它到定直线的距离相等.若存在,求出这个定点坐标和这条定直线的方程.若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e0563cf8fcb3d15886c26f4554aef8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32ae4ac252986a77c07b980d375a3fd.png)
(1)求曲线C的方程;
(2)经过P(1,2)作两条不与坐标轴垂直的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce08b357f11ef44c3e8207ac574422a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次