1 . 舒腾尺是荷兰数学家舒腾设计的一种作图工具,如图,O是滑槽AB的中点,短杆ON可绕O转动,长杆MN通过N处的铰链与ON连接,MN上的栓子D可沿滑槽AB滑动.当点D在滑槽AB内做往复移动时,带动点N绕O转动,点M也随之而运动.记点N的运动轨迹为
,点M的运动轨迹为
.若
,
,过
上的点P向
作切线,则切线长的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54298f581688081d0b0214334a0dedf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e47bb98258ebfcf1d8ad4bac10b7ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
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名校
解题方法
2 . 舒腾尺是荷兰数学家舒腾(1615-1660)设计的一种作图工具,如图,
是滑槽
的中点,短杆
可绕
转动,长杆
通过
处的铰链与
连接,
上的栓子
可沿滑槽
滑动.当点
在滑槽
内作往复移动时,带动点
绕
转动,点
也随之而运动.记点
的运动轨迹为
,点
的运动轨迹为
.若
,
,过
上的点
向
作切线,则切线长的最大值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54298f581688081d0b0214334a0dedf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e47bb98258ebfcf1d8ad4bac10b7ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/11/c4eeff73-ba84-4ca7-89f5-8e0749040c02.png?resizew=182)
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2023-09-10更新
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239次组卷
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12卷引用:2.2 直线与圆的位置关系(B 能力培优练)-2021-2022学年高二数学上学期同步双培优检测(苏教版2019选择性必修第一册)
(已下线)2.2 直线与圆的位置关系(B 能力培优练)-2021-2022学年高二数学上学期同步双培优检测(苏教版2019选择性必修第一册)浙江省湖州市三贤联盟2021-2022学年高二上学期期中联考数学试题(已下线)第二章 圆与方程(选拔卷)-【单元测试】2021-2022学年高二数学尖子生选拔卷(苏教版2019选择性必修第一册)2023版 北师大版(2019) 选修第一册 名师精选卷 第一、二、三章滚动测试广东省大湾区2022-2023学年高二上学期期末联考数学试题(已下线)第2章 直线和圆的方程(基础、典型、新文化、压轴)分类专项训练-2022-2023学年高二数学考试满分全攻略(人教A版2019选择性必修第一册)福建省泉州市晋江学校2023-2024学年高二上学期第二次月考数学试题江苏省南通市2021届高三下学期5月四模数学试题(已下线)第11题 与圆有关的最值问题-2021年高考数学真题逐题揭秘与以例及类(新高考全国Ⅰ卷)(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江苏省宿迁市沭阳县建陵高级中学2022-2023学年高三上学期期中数学试题(已下线)技巧02 填空题的答题技巧(8大题型)(练习)
3 . 中心在原点的双曲线
的焦点在x轴上,且焦距为4,请从下面3个条件中选择1个补全条件,并完成后面问题:
①该曲线经过点
;
②该曲线的渐近线与圆
相切;
③点
在该双曲线上,
,
为该双曲线的左、右焦点,当点
的纵坐标为
时,以
,
为直径的圆经过点
.
(1)求双曲线C的标准方程;
(2)过定点
能否作直线
,使
与此双曲线相交于
两点,且
是弦
的中点?若存在,求出
的方程;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
①该曲线经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aab000962b3e21db0bd949eb7a0d6fc.png)
②该曲线的渐近线与圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea31a691dd967aa83caf78e0a2e95d05.png)
③点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/a4b8503f4706b8321e4e79a87eadea84.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)
(1)求双曲线C的标准方程;
(2)过定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/355dffb42861f3e297694f4be77c694c.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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2020高三·全国·专题练习
真题
解题方法
4 . (1)求右焦点坐标是
,且经过点
的椭圆的标准方程;
(2)已知椭圆
的方程是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
.设斜率为
的直线
,交椭圆
于![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
两点,
的中点为
.证明:当直线
平行移动时,动点
在一条过原点的定直线上;
(3)利用(2)所揭示的椭圆几何性质,用作图方法找出下面给定椭圆的中心,简要写出作图步骤,并在图中标出椭圆的中心.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f4b5304fcad9f2a5a355e26b2318f5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b647d7e0213e12c73db1adb33e8a10d.png)
(2)已知椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faa2be655f8c6db5187a1928cf8bea9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](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/50312681cba520fc026f5b851c210d5e.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(3)利用(2)所揭示的椭圆几何性质,用作图方法找出下面给定椭圆的中心,简要写出作图步骤,并在图中标出椭圆的中心.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/4d864af0-86dc-40c6-b710-7bd08bf0cf50.png?resizew=129)
您最近一年使用:0次
2020-05-26更新
|
483次组卷
|
3卷引用:沪教版(2020) 选修第一册 领航者 第2章 2.2椭圆 第2课时 椭圆的性质(1)
沪教版(2020) 选修第一册 领航者 第2章 2.2椭圆 第2课时 椭圆的性质(1)(已下线)秒杀题型09 圆锥曲线中的中点弦-2020年高考数学试题调研之秒杀圆锥曲线压轴题2005年普通高等学校春季招生考试数学试题(上海卷)
5 . 中心在原点的双曲线
焦点在
轴上且焦距为
,请从下面3个条件中选择1个补全条件,并完成后面问题:
①该曲线经过点
;
②该曲线的渐近线与圆
相切;
③点
在该双曲线上,
、
为该双曲线的焦点,当点
的纵坐标为
时,恰好
.
(1)求双曲线
的标准方程;
(2)过定点
能否作直线
,使
与此双曲线相交于
、
两点,且
是弦
的中点?若存在,求出
的方程;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
①该曲线经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98b2cc0d2f6d3eee9a33db83e0c0830d.png)
②该曲线的渐近线与圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b914a9efeef04a78831004379bbb7292.png)
③点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2427943a38dcd93c9ec9b735ffc9fe5.png)
(1)求双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)过定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/355dffb42861f3e297694f4be77c694c.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/a86380a6d6501f6504dcb4aa5e3099f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae863e7a1f1fed09f1075de4a817c63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69c81d490c018a166d9970b1b5ea0a63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2021-11-28更新
|
316次组卷
|
2卷引用:福建省厦门第一中学2021-2022学年高二上学期期中考试数学试题
6 . (1)求右焦点坐标是
,且经过点
的椭圆的标准方程.
(2)已知椭圆
,设斜率为
的直线
交椭圆
于
两点,
的中点为
,证明:当直线
平行移动时,动点
在一条过原点的定直线上.
(3)利用(2)中所揭示的椭圆几何性质,用作图方法找出图中的定椭圆的中心,简要写出作图步骤,并在图中标出椭圆的中心.
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571947852431360/1571947857920000/STEM/c28d9ef0eba44eeda5181dc7b083523c.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571947852431360/1571947857920000/STEM/d8e5e6ac67eb4145853c8cf83a5f9119.png)
(2)已知椭圆
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571947852431360/1571947857920000/STEM/7477185b1fe941e981b8590cdca860b1.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571947852431360/1571947857920000/STEM/1f22135cfb4d452e8f4ff5c0ea89c38a.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571947852431360/1571947857920000/STEM/6966e45b096d44088b1f951176c7fe24.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571947852431360/1571947857920000/STEM/da9e63efc9b9427ca212f9b6cadd87f1.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571947852431360/1571947857920000/STEM/a101441825324af9bc98161496aa0fdd.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571947852431360/1571947857920000/STEM/e62465c4941e4c3a8fc7bedf9dddda98.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571947852431360/1571947857920000/STEM/1d13f72b19fb4a32b9be6a541eab2263.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571947852431360/1571947857920000/STEM/6966e45b096d44088b1f951176c7fe24.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571947852431360/1571947857920000/STEM/1d13f72b19fb4a32b9be6a541eab2263.png)
(3)利用(2)中所揭示的椭圆几何性质,用作图方法找出图中的定椭圆的中心,简要写出作图步骤,并在图中标出椭圆的中心.
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571947852431360/1571947857920000/STEM/82de281a98b141cc9bce4e539af0d4dc.png)
您最近一年使用:0次
名校
7 . 一种画双曲线的工具如图所示,长杆OB通过O处的铰链与固定好的短杆OA连接,取一条定长的细绳,一端固定在点A,另一端固定在点B,套上铅笔(如图所示).作图时,使铅笔紧贴长杆OB,拉紧绳子,移动笔尖M(长杆OB绕O转动),画出的曲线即为双曲线的一部分.若|OA|=10,|OB|=12,细绳长为8,则所得双曲线的离心率为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/33da8c9a-b96d-4635-8914-658eeefbcca5.png?resizew=177)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/33da8c9a-b96d-4635-8914-658eeefbcca5.png?resizew=177)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-01-17更新
|
445次组卷
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6卷引用:苏教版(2019) 选修第一册 突围者 第3章 第二节 课时2 双曲线的几何性质
苏教版(2019) 选修第一册 突围者 第3章 第二节 课时2 双曲线的几何性质(已下线)专题6.2 期中押题检测卷(考试范围:第1-3章)2(中)-【满分计划】2021-2022学年高二数学阶段性复习测试卷(苏教版2019选择性必修第一册) 2023版 苏教版(2019) 选修第一册 突围者 第3章 第二节 课时2 双曲线的几何性质【区级联考】北京市丰台区2019届高三第一学期期末考试数学(理)试题【市级联考】辽宁省沈阳市郊联体2019届高三第一次模拟考试数学(理科)试题北京交通大学附属中学2022届高三12月月考数学试题
解题方法
8 . 已知直线
:
与双曲线
:
(
,
)相交于
,
两点,双曲线
的左、右顶点分别为
,
,若直线
与
相交于点
,则下列说法中错误 的是________ .(填写所有错误 命题的序号)
①实数
的取值范围为
或
;
②直线
与直线
的斜率之积为定值;
③点
在曲线
上;
④
的面积最大值为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11abb76da45ffa52b47c3a6b9a03ac7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](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/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
①实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5d8b82a62adae1f46b780881e70a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26637c1957934d6073bdcf795e51a362.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
③点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/703b40a6293ed9e33001e2919379b168.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f0281e6bbdbe08beeccb55adf84536.png)
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9 . 某颗人造地球卫星的运行轨道是以地球的中心F为一个焦点的椭圆,如图所示,已知它的近地点A(离地面最近的点)距地面s千米,远地点B(离地面最远的点)距地面t千米,并且F,A,B三点在同一直线上,地球半径约为R千米,设该椭圆的长轴长、短轴长、焦距分别为2a,2b,2c,则下列选项正确的是______ (填写序号).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/11/454d3831-83d4-4e36-8791-fa5b20415f65.png?resizew=196)
①
;
②
;
③
;
④
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/11/454d3831-83d4-4e36-8791-fa5b20415f65.png?resizew=196)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94d04545be0ec3e0e017199b2e3b955.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbacc669782c5cd418cd78101d5c783b.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/111567c2b16d16d559e36675f9694d42.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb5f70f84bfaf6eb06d07d25c689abba.png)
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2023高三·全国·专题练习
名校
10 . 数学美的表现形式不同于自然美或艺术美那样直观,它蕴藏于特有的抽象概念、公式符号、推理论证、思维方法等之中,揭示了规律性,是一种科学的真实美.在平面直角坐标系中,曲线
就是一条形状优美的曲线,
则下列结论正确的是_______________ .(填写序号)
①曲线
围成的图形的周长是
;
②曲线
上的任意两点间的距离不超过4;
③曲线
围成的图形的面积是
;
④若
是曲线
上任意一点,则
的最小值是
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9556dfc485a8b60178f3b97bf622fa68.png)
则下列结论正确的是
①曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4a83cecb1e5ed89001d698f014542c.png)
②曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
③曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91d696caba21653bfc3570bb1cc6d713.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21872d8f6a518e0a2993ccf7a795ed2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e4795c3c15b735594587558923759ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/171809b0bbbd2e54dabd50110b368165.png)
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