名校
1 . 在直角坐标系
中,曲线
的参数方程为
(
为参数),以坐标原点
为极点,
轴的正半轴为极轴,取相同长度单位建立极坐标系,直线
的极坐标方程为
.
(Ⅰ)求曲线
和直线
的直角坐标方程;
(Ⅱ)直线
与
轴交点为
,经过点
的直线与曲线
交于
,
两点,证明:
为定值.
![](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/6ab29a77dc3d60df0ced82c133d89dd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ef8f1ab8f03bbe5005efc2cb0f214a.png)
(Ⅰ)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(Ⅱ)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/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/559d66fd8b309fd440ce9bda78a579c9.png)
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2019-06-18更新
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2932次组卷
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12卷引用:2020届辽宁省沈阳市东北育才学校高中部高三第六次模拟数学(文)试题
2020届辽宁省沈阳市东北育才学校高中部高三第六次模拟数学(文)试题【市级联考】河南省八市重点高中联盟“领军考试”2019届高三压轴数学(文)试题【校级联考】河南省八市重点高中联盟“领军考试”2019届高三压轴数学(理科)试题2019年10月广东省广州市天河区高考数学一模(文)试题2019年10月广东省广州市天河区高考数学一模(理)试题2020届福建省仙游第一中学高三上学期月考数学(理)试题(已下线)专题42 坐标系与参数方程-冲刺2020高考跳出题海之高三数学模拟试题精中选萃福建省泰宁第一中学2020届高三上学期第一阶段考试数学(理)试题甘肃省天水市第一中学2021届高三十模数学(理)试题甘肃省天水市第一中学2021届高三十模数学(文)试题黑龙江省牡丹江市第三高级中学2021-2022学年高三上学期第四次月考数学(文)试题沪教版(2020) 选修第一册 单元训练 第2章 曲线与方程(A卷)
名校
2 . 在直角坐标系
中,过点
的直线
的参数方程为
(
为参数),以原点为极点,
轴的正半轴为极轴建立极坐标系,已知曲线
的极坐标方程为
,记直线
与曲线
分别交于
两点.
(1)求曲线
和
的直角坐标方程;
(2)证明:
成等比数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e262b7599fda82ae392ac10df97feff0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d2a007d1b907662a60a19aea86c9b37.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/290a85b2ab10c11137bcb15db5774058.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/7789a500686c7a73770404ead6af0590.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edbe7df9aef23d33d1fc2d1d338904a3.png)
您最近一年使用:0次
2019-05-06更新
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636次组卷
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4卷引用:【校级联考】辽宁省葫芦岛协作校2018-2019学年高二下学期第二次考试数学(文)试题
名校
3 . 在极坐标系中,点
坐标是
,曲线
的方程为
;以极点为坐标原点,极轴为
轴的正半轴建立平面直角坐标系,斜率是
的直线
经过点
.
(1)写出直线
的参数方程和曲线
的直角坐标方程;
(2)求证直线
和曲线
相交于两点
、
,并求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5760432cb9dd70e6042d5ac29d506c83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2030daf33fd69a0ef6ab1a2dedcc7a33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)写出直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求证直线
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13c54cd0878ea19f3ae4d35348c04e7f.png)
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2018-05-18更新
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567次组卷
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5卷引用:【全国校级联考】辽宁省六校协作体2017-2018学年高二下学期期中考试数学(理)试题