名校
1 . 在极坐标系中,曲线
的方程是:
,且与
、
轴正半轴交于
、
两点.点
为曲线
上任意一点,将
绕原点逆时针旋转
,且长度变为原来的一半,得到点
,点
的轨迹为曲线
.射线:
与曲线
交于点
,与曲线
交于点
.以极点为原点,极轴为
轴建立直角坐标系.
(1)求直线
的一个参数方程及曲线
的极坐标方程;
(2)求线段
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/371ed9a8f6647b919b73f4741513e900.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49f8a63ddbca52039fa9ab44cda6b29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f5d2e8186f0173d7862b1d39fb3dc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c07a88d8187839a9ca38041a406a405.png)
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名校
2 . 第十四届全国冬季运动会于2月17日在内蒙古呼伦贝尔开幕,这是继北京冬奥会后全国举办的又一冬季项目大型体育赛事,也是内蒙古首次承办的全国大型综合体育盛会.本次赛事共设8个大项,16个分项,176个小项.在开闭幕期间,运动员、裁判员、教练员、媒体记者等总规模达4000余人.武大靖、任子威等明星运动员也纷纷亮相.某高中体育爱好者打算借四叶草具有幸福幸运的象征意义,准备设计一枚四叶草徽章以作纪念.如图,在极坐标系
中,方程
表示的图形为“四叶草”对应的曲线
.
的
时;求以极点为圆心的单位圆与
的交点的极坐标;
(2)设
和
是
上的两点,且
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374d388d837e6e7e845e1e45dd3943b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9e1dd70ccd7718f7ede19005034cad.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/e38fec745f18e1c06ecd27a5f6b2577f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56150248dd4b787a2013311e4737e93f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8a99d2c4a23825f62aadcc40822b5eb.png)
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3 . 坐标平面
上的点
也可表示为
,其中
为
轴非负半轴绕原点
逆时针旋转到与OP重合的旋转角.将点
绕原点
逆时针旋转
后得到点
,这个过程称之为旋转变换.
(1)证明旋转变换公式:
并利用该公式,求点
绕原点
逆时针旋转
后的点
的坐标;
(2)旋转变换建立了平面上的每个点
到
的对应关系.利用旋转变换,可将曲线通过旋转转化为我们熟悉的曲线进行研究.
(i)求将曲线
绕原点
顺时针旋转
后得到的曲线方程,并求该曲线的离心率;
(ii)已知曲线
,点
,直线AB交曲线
于
,
两点,作
的外角平分线交直线AB于点
,求|FM|的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f769907ad11c909d27dd855bf0914592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1029aaebd18d54c2c4d83219ccabc17e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c3682b5a7157ec7cf8b265bf0d1025c.png)
(1)证明旋转变换公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/623c5066668a603bb3d9a8fe05a9e5dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cca401344cfe39388623409fed20243b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6f8906c9d7ce68defb89848faa531ca.png)
(2)旋转变换建立了平面上的每个点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6f8906c9d7ce68defb89848faa531ca.png)
(i)求将曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c89034582719fefec243548a3b5e5a42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
(ii)已知曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a721040f609e2d77d72b5deba330e58f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fecb5caa69f91798f56550bdba335c03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.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/36719f1e764ee0e719b65c49fae84677.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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4 . 瑞士数学家雅各布·伯努利在1694年类比椭圆的定义,发现了双纽线.双纽线的图形如图所示,它的形状像个横着的“8”,也像是无穷符号“∞”.定义在平面直角坐标系
中,把到定点
距离之积等于
的点的轨迹称为双纽线
.以
为极点,
轴的正半轴为极轴建立极坐标系.
(1)求双纽线
的极坐标方程;
(2)双纽线
与极轴交于点P,点M为C上一点,求
面积的最大值(用
表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1aa1a5565eef09e163e2b3487beaa6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd0f31afe865a63682ccd4a18a0e0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/26/5dede47c-56c9-4ba0-b918-1a0fc4f70c20.png?resizew=179)
(1)求双纽线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)双纽线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a51268fce97426487c3338d6ec3d571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2023-05-20更新
|
627次组卷
|
4卷引用:四川省成都市郫都区2024届高三上学期阶段检测(三)理科数学试卷
名校
解题方法
5 . 数学中有许多美丽的曲线,例如曲线
,(t为参数)的形状如数字8(如图),动点A,B都在曲线E上,对应参数分别为
与
,设O为坐标原点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/9/444a2eeb-2633-42e1-ab9d-6f3ed4fb2909.png?resizew=149)
(1)求C的轨迹的参数方程;
(2)求C到坐标原点的距离d的最大值和最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a11d6a96018681bcf04768dc8d7e6601.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1adb726efaa7daa1613f56a6d75da819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0248ff66368b4c849bc98c7d86dc644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc170fc6c893de77fdbb1d5a9b34814.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/9/444a2eeb-2633-42e1-ab9d-6f3ed4fb2909.png?resizew=149)
(1)求C的轨迹的参数方程;
(2)求C到坐标原点的距离d的最大值和最小值.
您最近一年使用:0次
2023-05-08更新
|
1080次组卷
|
4卷引用:四川省绵阳市南山中学实验学校2024届高三上学期“二诊”模拟数学(文)试题
6 . 在极坐标系中,
为极点,如图所示,已知
以
为直径作圆
.
的极坐标方程 ;
(2)若
为圆
左上半圆弧
的三等分点,求
点的极坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c70563042e800e0d6d597f170c5a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea11b0ea79b5a7b2bac364d146022c25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b96f07aca9b63c31ffd5273e302635f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b96f07aca9b63c31ffd5273e302635f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34fecdba74b21123e896995a5d1fc68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b96f07aca9b63c31ffd5273e302635f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9df7c4d3363e95396136b57ddf40e44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34fecdba74b21123e896995a5d1fc68.png)
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2022-06-02更新
|
763次组卷
|
6卷引用:四川省宜宾市叙州区第一中学校2024届高三上学期一诊模拟考试数学(文)试题
名校
7 . 多样化的体育场地会为学生们提供更丰富的身体锻炼方式.现有一个标准的铅球场地如图,若场地边界曲线M分别由由两段同心圆弧
和两条线段
四部分组成,在极坐标系
中,
,A、O、B三点共线.
,点C在半径为1的圆上.
(2)若需设置一个距边界曲线M距离不小于1且关于极轴所在直线对称的矩形警示区域,如图,求警示区域所围的最小面积.
注:
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4947600808d89be0f44ee44184245904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c4cd264c97c1f261229925cc5a6761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3e5af20b2f8c1fba4470f9650989e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ea0e1899670d6a143a225256c59348f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/918a29dde19360105c62d3842fbac0e7.png)
(2)若需设置一个距边界曲线M距离不小于1且关于极轴所在直线对称的矩形警示区域,如图,求警示区域所围的最小面积.
注:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcf1671d3e1e5e9c394d738e8d6f12e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77e18f18ddcd6bc68867f8eb76930e37.png)
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2022-04-14更新
|
732次组卷
|
6卷引用:四川省成都市第七中学2024届高三上学期期末数学(理)试题
(已下线)四川省成都市第七中学2024届高三上学期期末数学(理)试题四川省成都市第七中学2024届高三上学期期末数学(文)试题四川省成都市成华区某校2023-2024学年高三下学期“三诊”数学(理)试题四川省成都市成华区某校2023-2024学年高三“三诊”数学(文)试题四川省泸县第二中学、泸县二中实验学校2022届高三上学期模拟考试数学(文)试题(已下线)押全国卷(文科)第22题 坐标系与参数方程-备战2022年高考数学(文)临考题号押题(全国卷)