1 . 在直角坐标系xOy中,曲线C1的参数方程为
(α为参数),以坐标原点O为极点,x轴的正半轴为极轴建立极坐标系,曲线C2的极坐标方程为ρsin(
-θ)=
.
(1)求曲线C1的普通方程与曲线C2的直角坐标方程;
(2)设点M(1,0),若曲线C1,C2相交于A,B两点,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ccba3988868e07dc74ef3053102bfff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(1)求曲线C1的普通方程与曲线C2的直角坐标方程;
(2)设点M(1,0),若曲线C1,C2相交于A,B两点,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5026e1d5fcf2498b2e5ec5da4e0b11b2.png)
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9卷引用:广西玉林市普通高中2021-2022学年高二下学期期末教学质量监测数学(文)试题
广西玉林市普通高中2021-2022学年高二下学期期末教学质量监测数学(文)试题广西玉林市普通高中2021-2022学年高二下学期期末教学质量监测数学(理)试题新疆乌鲁木齐市第八中学2021-2022学年高二下学期期末考试数学(文)试题贵州省部分重点中学2022届高三8月联考试题数学(文)试题贵州省部分重点中学2022届高三8月联考试题数学(理)试题黑龙江省鹤岗市第一中学2021-2022学年高三上学期第一次月考数学(文)试题甘肃省张掖市2021-2022学年高三上学期期末数学(文)试题河南省顶尖名校2021-2022学年高三下学期第三次素养调研文科数学试卷宁夏中卫市2022届高三第三次模拟考试数学(理)试题
解题方法
2 . 直线
与
轴分别交于
两点,
是曲线
(
为参数)上的动点,则
面积的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcefd18333f55a3aa65c444d68feed1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.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/44bc7009f5cbeedefc9f23bf64f8db55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b17f20c25bb16153b5f2d25062ed7a7.png)
A.![]() | B.![]() | C.![]() | D.2 |
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3 . 直线
:
与曲线
:
(
为参数)相交所得的弦长是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4420c7c24162d8593064cd51c208d226.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 点
的直角坐标为
,则点
的极坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aedad6bb70631b944c69f8f0b02b35d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2卷引用:广西钦州市2020-2021学年高二下学期期末数学(文)试题
5 . 下列点不在直线
(
为参数)上的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc38d0ca0fb5a7168550239315d056e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2卷引用:广西钦州市2020-2021学年高二下学期期末数学(理)试题
6 . 设
,
分别为曲线
:
(
为参数)与直线
:
上的动点,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f721c6826fbf8a36946347768b722de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c380567212748bedfb1955b6ca961155.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44e8bc37ed03f44470762748a8f942a.png)
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7 . 在直角坐标系
中,已知曲线
、
的参数方程分别为
:
(
为参数),
:
(
为参数)
(1)求曲线
的普通方程;
(2)若曲线
与曲线
交于
、
两点,求弦长
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7795aec93c2c7ac2fd93e6747ca6516c.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/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f296d64060af892d462f77fac32e25f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d7f991e006cce35f2ea144ed6450737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)若曲线
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
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2卷引用:广西钦州市2020-2021学年高二下学期期末数学(文)试题
8 . 在直角坐标系
中,圆
的方程为
,直线
的方程为
,以直线坐标系
的原点为极点,
轴正半为极轴建立极坐标系.
(1)求直线
和圆
的极坐标方程;
(2)若
与圆
的一个交点为
(点
与点
不重合),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/550d183b05000722c74baf25eb4a6741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21d532ce76942846df88c6f66112e50f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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
![](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/dad2a36927223bd70f426ba06aea4b45.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/3f645d4b09fba53f971172cd2602c691.png)
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9 . 曲线
经过
:
变换后,得到的新曲线的方程为
,则原曲线
的方程是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d9604c8c0c249a604a75d57e29055d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa966b9eb79620e797a58435755814f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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2卷引用:广西钦州市2020-2021学年高二下学期期末数学(文)试题
10 . 已知直线
(t为参数),曲线
.
(1)求直线
的普通方程与曲线
的直角坐标方程;
(2)求直线
被曲线
所截得的弦长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80907e40cf9891547dd9b40da4b4236d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7e99c0648831b45f4688a394cf74126.png)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
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