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解题方法
1 . 中国结是一种传统的民间手工艺术,带有浓厚的中华民族文化特色,它有着复杂奇妙的曲线.用数学的眼光思考可以还原成单纯的二维线条,其中的“
”形对应着数学曲线中的双纽线.在平面直角坐标系
中,把与定点
、
距离之积等于
的动点的轨迹称为伯努利双纽线,记为曲线
.关于曲线
,有下列两个命题:
①曲线
上的点的横坐标的取值范围是
;
②若直线
与曲线
只有一个交点,则实数
的取值范围为
.
则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/229e67dd9fe978e48c221b0b9dc57f1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcb162568cb923c31c7209c8a22e4674.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa5314fd70d2e8aeb042d308a604a2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8cc0b4997cae4d8aec791a1d3923314.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
①曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad16a9960ae9c0d968bf0651709cd5d9.png)
②若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac02a054bd0771a56987af33454baaea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f6f693a154b09330bad58feb9d7fd54.png)
则( )
A.①为真命题,②为假命题 | B.①为假命题,②为真命题 |
C.①为真命题,②为真命题 | D.①为假命题,②为假命题 |
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2 . 已知
为坐标原点,
,
.若点
满足
.记点
的轨迹为曲线
,且
与曲线
在第一象限的交点为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e72358a12f923519a407a46c07f5d33.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5544274135a5332a1403741c8c0bd2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/788a45292b81b3632fda1f9df89308fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad245ab26aecb331b737acaad7dbf8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0059cb1f331ba2fdfa8b089d4557401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e72358a12f923519a407a46c07f5d33.png)
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3 . 已知双曲线C:
定义:把双曲线
的虚轴保持不变,渐近线的斜率变为原来渐近线斜率的两倍得到的曲线称为曲线
的“
线”,把双曲线
的左支向右平移
个单位,把它的右支向左平移
个单位得到的曲线称为曲线
的“
-线”,若双曲线
是等轴双曲线,且焦距等于
,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/7/4c91a0eb-1442-46fa-bc3a-7a4cce048598.png?resizew=190)
(1)求双曲线
的“
-线”和“
-线”;
(2)若由“
-线”和“
-线”围成的封闭曲线上的点集都在圆
内或圆
上,求半径最小时圆
的方程,并在坐标系中用尺规作图画出该封闭曲线和圆
大致图像.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4446f654cf8401b640cc79c2b97af5db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec978eb43bc4f9e7df83b0d0195dcda.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/7/4c91a0eb-1442-46fa-bc3a-7a4cce048598.png?resizew=190)
(1)求双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
(2)若由“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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4 . 已知曲线
:
与曲线
:
,且曲线C1和C2恰有两个不同的交点,则实数m的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfda0696f276fff4177533f8c63e349.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d94be96bbc5793e37fcdb240051146d6.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2023-01-13更新
|
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4卷引用:上海市进才中学2022-2023学年高二上学期期末数学试题
上海市进才中学2022-2023学年高二上学期期末数学试题(已下线)期末真题必刷基础60题(35个考点专练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(沪教版2020必修第三册)(已下线)核心考点04抛物线、曲线与方程(1)四川省内江市第六中学2022-2023学年高二下学期第一次月考数学(理科)试题
2022·上海浦东新·模拟预测
名校
5 . 已知平面直角坐标系中的直线
、
.设到
、
距离之和为
的点的轨迹是曲线
,到
、
距离平方和为
的点的轨迹是曲线
,其中
.则
、
公共点的个数不可能为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4073d527d4b14759a7cbaeabfb35a756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d9fc68d6d88485e65bfc599dfdde547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a8ef3f4a8e843a79c3b03adeb61adab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e85963eb36e1406ca2dfd1d039fbeaea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86363d72a870d73f2ecd70a87043fd58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
A.0个 | B.4个 | C.8个 | D.12个 |
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2022-07-05更新
|
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9卷引用:上海市金山中学2022-2023学年高二上学期期末数学试题
上海市金山中学2022-2023学年高二上学期期末数学试题(已下线)核心考点04抛物线、曲线与方程(3)(已下线)上海市华东师范大学第二附属中学2022届高三考前模拟数学试题(已下线)3.1.1 椭圆的标准方程-2022-2023学年高二数学《基础·重点·难点 》全面题型高分突破(苏教版2019选择性必修第一册)(已下线)专题26 求动点轨迹方程 微点7 求动点轨迹方程综合训练(已下线)第12讲 直线和圆的方程-3(已下线)考向32 椭圆(重点)(已下线)专题19 圆锥曲线 (练习)-2(已下线)专题19 圆锥曲线 (模拟练)-2
名校
6 . 已知曲线
:
与曲线
:
恰好有两个不同的公共点,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1408e7f52ea8b0de46ad044f5caba5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfd17b56d070c6143f4b2a90ace7aa0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
7 . 已知曲线
与曲线
恰好有两个不同的公共点,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd0c7837834ca9fd8f91657e5991f5d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91489cae0636c93a68b79e9dd77f85db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-12-01更新
|
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11卷引用:上海市徐汇区2017-2018学年高二上学期期末数学试题
上海市徐汇区2017-2018学年高二上学期期末数学试题上海市奉城高级中学2019-2020学年高二上学期期末数学试题上海市曹杨第二中学2017-2018学年高二下学期期中数学试题上海市松江区2017-2018学年高三上学期期末数学试题北京师大附中2019-2020学年上学期高二年级期末考试数学试题上海市吴淞中学2018-2019学年高三上学期10月月考数学试题天津市第一中学滨海学校2021-2022学年高二下学期4月复课摸底考试数学试题(已下线)冲刺卷05-决战2020年高考数学冲刺卷(山东专版)(已下线)专题11 圆锥曲线-2021年高考冲刺之二轮专题精讲精析(已下线)考点33 曲线与方程-备战2022年高考数学(理)一轮复习考点微专题(已下线)专题5 曲线轨迹与交点问题
8 . 曲线
上的点到直线
的距离的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71a120e118263f6b9fde8054e1a57479.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48e307be89a2ae01bd3fb8442b4e12af.png)
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9 . 已知椭圆
的两焦点分别为
,
,
是椭圆在第一象限内的一点,并满足
,过
作倾斜角互补的两直线
、
分别交椭圆于
、
两点.
(1)求
点坐标;
(2)当直线
经过点
时,求直线
的方程;
(3)求证直线
的斜率为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d80b861ba40387cb2bcd04945f5a371a.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03752bb01ac43b8f3b7d3e240da1fbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)当直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da61a8fc8f424929e9bf36622f1ca74f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)求证直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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2020-01-09更新
|
645次组卷
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2卷引用:上海市华东师大一附中2017-2018学年高二上学期期末数学试题
名校
10 . 已知集合
,若实数
满足:对任意的
,均有
,则称
是集合
的“可行数对”.以下集合中,不存在“可行数对”的是_________ .
①
; ②
;
③
; ④
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279df7662f7991385fa66a5844e80627.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ec6fb9e0625b85be3103d317fbb0cca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/363582b57409a732a3448c1993e2f230.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a22cdf1e5a53b7c733c6a3c05149a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9e4273fd70a87d3e990c464d760b9e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b22c741a5c702f000f863b3606c04a10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba232bf80b5885e1c5bc32b68c86d3f2.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc04dc0ee2e123bec379e3ed9641ddd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9fd7ef7e61ac7b7d5c420071101b96a.png)
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2019-04-10更新
|
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5卷引用:上海市青浦区2018-2019学年高二下学期期末数学试题