1 . 在直角坐标系:xOy中,已知倾斜角为α的直线l经过点
.以坐标原点为极点,x轴的正半轴为极轴建立极坐标系,曲线C的极坐标方程为
.
(1)写出曲线C的直角坐标方程,并指出曲线C的形状;
(2)著直线l与曲线C有两个不同的交点A,B,且
,求α的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1cf8af6e62058cc4e2d83d5da7f4c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dce15e048949bd139273ea812c30f74b.png)
(1)写出曲线C的直角坐标方程,并指出曲线C的形状;
(2)著直线l与曲线C有两个不同的交点A,B,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e47d2c70e0de5301124d7d09ecda340.png)
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2023-12-20更新
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83次组卷
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2卷引用:贵州省黔东南自治州镇远县文德民族中学校2022届高三上学期期末数学(理)试题
2 . 在直角坐标系
中,点
的坐标是
,曲线
的参数坐标方程
(
为参数,
).以坐标原点
为极点,
轴正半轴为极轴的极坐标系中曲线
的极坐标方程为
,
与
交于
,
两点.
(1)将曲线
的极坐标方程化为直角坐标方程,并指出它是什么曲线?
(2)过点
作垂直于
的直线
交
于
,
两点,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eef3fad7648cc5091dc50d81a2ea3bc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b992104248a854e6e033c26602aff813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27bd6de5b955ece11530dd4997b12b74.png)
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)将曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3381639d2f052c80ca30c81587d7252d.png)
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2023-07-25更新
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2卷引用:贵州省贵阳市第一中学2023届高三上学期期末理科数学试题
3 . 在平面直角坐标系
中,伯努利双纽线C(如图)的普通方程为
,直线l的参数方程为
(其中
为直线l倾斜角,t为参数).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/25f3f70f-a20a-464f-a09a-5abeb5982cfa.png?resizew=210)
(1)以O为极点,x轴的非负半轴为极轴建立极坐标系,求C和l的极坐标方程;
(2)设A、B是C与x轴异于原点的交点,当
时,l与C在第一象限的交点为M,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b93cb39c22de76f1cf458ab6daaa99c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dadd634077778c9db49c6082de3af072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/25f3f70f-a20a-464f-a09a-5abeb5982cfa.png?resizew=210)
(1)以O为极点,x轴的非负半轴为极轴建立极坐标系,求C和l的极坐标方程;
(2)设A、B是C与x轴异于原点的交点,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d450aea0fb89e956fc4caa3a9c59fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4b0c4b339f44bbac0e275eb0718234.png)
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3卷引用:贵州省贵阳市普通中学2023届高三上学期期末监测考试数学(文)试题
名校
解题方法
4 . 在平面直角坐标系
中,曲线C的参数方程为
(
为参数),以坐标原点O为极点,x轴的非负半轴为极轴建立极坐标系,直线l的极坐标方程是
.
(1)求曲线C的普通方程和直线l的直角坐标方程;
(2)已知
,设直线l和曲线C交于A,B两点,线段
的中点为Q,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5886e7f9cc237f27c89af94b6f28209a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74c6b27701859b6e371884b2865dac45.png)
(1)求曲线C的普通方程和直线l的直角坐标方程;
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a297f399ee48fe07cd6aacc935a1c46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82358b724051b032c7ec734a226ae84.png)
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2023-01-19更新
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358次组卷
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6卷引用:贵州省黔东南州2023届高三上学期复习统一检测(期末)数学(理)试题
5 . 已知极坐标系的极点在直角坐标系的原点处,极轴与x轴的正半轴重合,直线l的极坐标方程为
,曲线C的参数方程是
(t是参数).
(1)求直线l及曲线C的直角坐标方程;
(2)求直线l被曲线C截得弦
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17605f99b321b376eec1a423d8b109f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be93f8bfafdb7aada2a686eebe57a2e.png)
(1)求直线l及曲线C的直角坐标方程;
(2)求直线l被曲线C截得弦
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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2卷引用:贵州省铜仁市2023届高三上学期期末质量监测数学(文)试题
6 . 在直角坐标系xOy中,曲线
的参数方程为
(t为参数),以坐标原点为极点,x轴正半轴为极轴建立极坐标系,曲线
的极坐标方程为
.
(1)求曲线
的普通方程及
的直角坐标方程;
(2)判断曲线
,
的位置关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a5f7b3de7ec2799af37a43a5917d6a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f5e0a865f840855aa164e2c7c6b1583.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)判断曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
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2022-11-20更新
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144次组卷
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2卷引用:贵州省六盘水市2021-2022学年高二下学期期末质量监测数学(文)试题
7 . 在平面直角坐标系
中,直线
的参数方程为
(t为参数),以坐标原点
为极点,
轴的非负半轴为极轴建立极坐标系,曲线
的极坐标方程是
.
(1)求直线
的普通方程和曲线
的直角坐标方程;
(2)若直线
与曲线
交于
两点,点
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9788b1aaab7c406bb82d44188bb67d49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb2ae187cd112b9a2d192a349194b07a.png)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328aaba77106396d4ca644c8b7a352e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7384b9afcef2d86a87eee0c66f383052.png)
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2022-09-29更新
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4卷引用:贵州安顺市2023届上学期高三期末数学(文)试题
解题方法
8 . 实数x,y满足
,则
的最大值和最小值之和是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/072d7a498277a8ec2f3190217a869433.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e63cf5c0bf7bf30b777032fe96a311.png)
A.![]() | B.![]() | C.0 | D.![]() |
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解题方法
9 . 平面直角坐标系中,曲线C的参数方程为
(
为参数).
(1)求曲线C的直角坐标方程;
(2)以原点为极点,x轴正半轴为极轴建立极坐标系,若P点的极坐标为
,过点P的直线交C于A,B两点,
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea24806317e4493a07aab1581cb6fc1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(1)求曲线C的直角坐标方程;
(2)以原点为极点,x轴正半轴为极轴建立极坐标系,若P点的极坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/897efac27ea9a13beaafa82ddc739b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d25e70d37af93796965efc8d342185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21fb427aebdda8f94bc7841a18173995.png)
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2022-07-29更新
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183次组卷
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2卷引用:贵州省铜仁市2021-2022学年高二下学期期末质量检测数学(理)试题
10 . 在直角坐标系
中,已知曲线
的参数方程为
(
为参数),以原点为极点,
轴正半轴为极轴建立极坐标系,曲线
的极坐标方程是
.
(1)求曲线
的极坐标方程;
(2)若射线
与曲线
和曲线
分别交于M,N两点(异于О点),求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a386230a6399a81bbbc52263e1cece7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/925b34a1e7a48f450d883f9a0197e5c9.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e116dffed402f8324560514230ce8b09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/084cf5ffced059f5653ee2a1023518b7.png)
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2022-07-15更新
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3卷引用:贵州省黔西南州2021-2022学年高二下学期期末质量检测数学(文)试题