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解题方法
1 . 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)
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4卷引用: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
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
2 . 在直角坐标系xOy中,动点P与定点
的距离和它到定直线
的距离之比是
,设动点P的轨迹为E.
(1)求动点P的轨迹E的方程;
(2)设过F的直线交轨迹E的弦为AB,过原点的直线交轨迹E的弦为CD,若
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ba2238d6afe0187534155dd9ac48c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求动点P的轨迹E的方程;
(2)设过F的直线交轨迹E的弦为AB,过原点的直线交轨迹E的弦为CD,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1791846aaa3ff3c22c9d751a6500275.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f14b014b0be63514079243a914c7d20e.png)
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5卷引用:湖北省黄石市大冶市第一中学2019-2020学年高三文科复读班12月月考数学试题
3 . 已知函数
的导函数为
,
,且函数
存在零点
.
(1)求实数
、
的值;
(2)当
时,不等式
恒成立,求实数
的取值范围(参考数据:方程
的一个近似解
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eba33b34e546c945d870013e2a94f0ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a587fb0ee137864d8ecd72274540af38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77fe357d60bf691c95723eb152c37203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50dc977e9ac0eeaf9fa581d1feba9e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d61db1616bae285b329c184f84c6d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36004a6491f4f1ec208e346808b73f00.png)
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4 . 椭圆
与双曲线
焦点相同,
、
分别为左焦点和右焦点,椭圆
与双曲线
在第一象限交点为
,且
,则当这两条曲线的离心率之积为
时,双曲线
的渐近线斜率是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cf6cca367ce2afd96d7d951f9587e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e169933b24e3534ac5ea22a3c53b858e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/102cebe878145cd0e551f4cb72c726ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
5 . 已知函数
,
.
(1)讨论函数
的单调性;
(2)若存在与函数
,
的图象都相切的直线,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed02a0eb91ac3b3f4e11796fc97a1a75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69e13cc3872c9b7906449992f9075861.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c204be088a8fc6c096eedd5b1e7dc7.png)
(2)若存在与函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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3卷引用:【市级联考】湖北省八市(黄石市.仙桃市.天门市.潜江市.随州市.鄂州市.咸宁市.黄冈市)2019届高三3月联合考试理科数学试题
6 . 已知椭圆
的左右焦点分别为
,其焦距为
,点
在椭圆
上,
,直线
的斜率为
(
为半焦距)·
(1)求椭圆
的方程;
(2)设圆
的切线
交椭圆
于
两点(
为坐标原点),求证:
;
(3)在(2)的条件下,求
的最大值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5379ca02a94af1e74e5e00e38ba6e327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a649229b6afa314d5cb7d9a66115734.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94f4faed99e8f7100584d50eedea8c1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9ecc3aaae2aa289591a3b632f1e0645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52b33328faae2d2d4921900e97424de5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b2fe2eaadae4df6247a131a1cddb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
(3)在(2)的条件下,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff24c95fe581befd56c3bcc70e88b726.png)
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