名校
1 . 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)
您最近一年使用:0次
2018-05-18更新
|
567次组卷
|
5卷引用:宁夏长庆高级中学2020-2021学年高二下学期期末数学(理)试题
名校
2 . 已知直线
的参数方程为
(
为参数,
),以坐标原点为极点,以
轴正半轴为极轴建立极坐标系,曲线
的极坐标方程为
,射线
,
分别与曲线
交于
三点(不包括极点
).
(Ⅰ)求证:
;
(Ⅱ)当
时,若
两点在直线
上,求
与
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea0c89112e34d5096a06165c6cbd015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10adc3992efb2badc23f81d36faa206f.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/925b34a1e7a48f450d883f9a0197e5c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0be5c8e545a1251a276a7726d469f25a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2388a1c07fdee1a7accfb6882e93c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59fec83a7cecffd20f3fbd85dba6bc4d.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91950023a67715fe5b61f1c9d1d6f87f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6b93dbe5272a5167ff4e2918bec864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
2018-03-14更新
|
1106次组卷
|
5卷引用:2020届广东省华南师大附中、实验中学、广雅中学、深圳中学高三上学期期末联考理科数学
3 . 已知曲线C1,C2的极坐标方程分别为ρ=2cosθ,
,射线θ=φ,
,
与曲线C1交于(不包括极点O)三点A,B,C.
(Ⅰ)求证:
;
(Ⅱ)当
时,求点B到曲线C2上的点的距离的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c9b2b03e279d4151b1d6d27b71fdd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae45cccc88f222f02690cfe308ac9df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e32208c10cb6f181456640c4ac71d47.png)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/703bf986844333a1524b971ad1696b77.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cddce60584c6209740248d3e2005fd52.png)
您最近一年使用:0次
2017-09-05更新
|
54次组卷
|
2卷引用:河北省张家口市2016-2017学年高二下学期期末考试文科数学试卷
4 . 已知
是椭圆
上的两个点,
是坐标原点,若
.
(1)求证:
;
(2)求
的面积的最大值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c0b06dc01c30d13f64be2ac6a1d811e.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42fae67237e0d0c8dcc1c7c4a7c48a55.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/800eca4e8d1c3f4792a1d3aba6f3b481.png)
您最近一年使用:0次
名校
解题方法
5 . 已知椭圆
为参数),
是
上的动点,且满足
为坐标原点),以原点
为极点,
轴的正半轴为极轴建立坐标系,点
的极坐标为
.
(1)求线段
的中点
的轨迹
的普通方程;
(2)利用椭圆
的极坐标方程证明
为定值,并求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c371ef470aab5fafd40c4ccf046ab24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1584bf303d82497e3efa4db77a8eded5.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf10ca659af379e3eac4a861234430e.png)
(1)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)利用椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dcb4841ae7bb1d5f91837094cdfcf2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
您最近一年使用:0次
2017-05-28更新
|
545次组卷
|
2卷引用:河北省馆陶县第一中学2016-2017学年高二下学期期末考试数学(理)试题
名校
6 . 在平面直角坐标系中,以坐标原点为极点,x轴的正半轴为极轴建立极坐标系,已知曲线C的极坐标方程为 ρsin2θ=2cosθ ,过点P(﹣2,﹣4)的直线l的参数方程为
(t为参数),直线l与曲线C相交于A,B两点.
(Ⅰ)写出曲线C的直角坐标方程和直线l的普通方程;
(Ⅱ)求证:|PA|•|PB|=|AB|2.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f729d840ffcaea5c18bc71cb2e2f8da.png)
(Ⅰ)写出曲线C的直角坐标方程和直线l的普通方程;
(Ⅱ)求证:|PA|•|PB|=|AB|2.
您最近一年使用:0次
12-13高三·吉林·期末
7 . 极坐标系中椭圆C的方程为
以极点为原点,极轴为
轴非负半轴,建立平面直角坐标系,且两坐标系取相同的单位长度.
(Ⅰ)求该椭圆的直角坐标方程;若椭圆上任一点坐标为
,求
的取值范围;
(Ⅱ)若椭圆的两条弦
交于点
,且直线
与
的倾斜角互补,
求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99fff3d23b6616ce8d2abedb8ea239ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(Ⅰ)求该椭圆的直角坐标方程;若椭圆上任一点坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cb8cde290c8b049d3a634cd394c5ec.png)
(Ⅱ)若椭圆的两条弦
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c4cd264c97c1f261229925cc5a6761.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/9d78abbad68bbbf12af10cd40ef4c353.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f1a5d9260efb0fa4f829aee6e01819.png)
您最近一年使用:0次
12-13高二上·辽宁大连·期末
8 . 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-1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/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)
您最近一年使用:0次
9 . 已知极坐标系的极点与直角坐标系的原点重合,极轴与直角坐标系的x轴的正半轴重合.设点O为坐标原点,直线
(参数t∈R)与曲线C的极坐标方程为ρsin2θ=4cosθ.
(1)求直线l与曲线C的普通方程;
(2)设直线L与曲线C相交于A,B两点,求证:
.
![](https://img.xkw.com/dksih/QBM/2016/4/14/1572593017864192/1572593023934464/STEM/7a1457160db044e584837d045a1a5360.png)
(1)求直线l与曲线C的普通方程;
(2)设直线L与曲线C相交于A,B两点,求证:
![](https://img.xkw.com/dksih/QBM/2016/4/14/1572593017864192/1572593023934464/STEM/0463343e2ead486588850cd3693be51f.png)
您最近一年使用:0次