名校
1 . 正方形
中,点
在以
为圆心且与直线
相切的圆上运动,若
(其中
,
),则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4ae2789a5e286e2ce63783a7d60165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cefeddff52b02a43831beeb4bb6faa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febf7413b35cf2889fdb57a6b519087c.png)
您最近一年使用:0次
2020-03-16更新
|
930次组卷
|
4卷引用:2019届湖北省黄冈中学高三三诊理科数学试题
2019届湖北省黄冈中学高三三诊理科数学试题2019届湖北省黄冈中学高三三诊文科数学试题山西省太原市第五十六中学2020-2021学年高一下学期第一次月考数学试题(已下线)三省三校2022届高三下学期第一次模拟数学(理)试题变式题11-15
2 . 选修4-4:坐标系与参数方程
在平面直角坐标系
中,曲线
:
(
为参数,实数
),曲线
:
(
为参数,实数
).在以
为极点,
轴的正半轴为极轴的极坐标系中,射线
与
交于
两点,与
交于
两点.当
时,
;当
时,
.
(Ⅰ)求
的值;
(Ⅱ)求
的最大值.
在平面直角坐标系
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/07f68f1754664fa9a4617b92d1c65805.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/0adc300b01ff4883baeb3d2403cf29ea.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/d85b86d238f646d38cda69d9304b6c5f.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/6e640b9ef3d54a9492f1969ec3e00328.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/80c4c073d52c4bb99bc59cdbf59bef1e.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/e940aa43932f48dcb62e7c72a0dab977.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/72ec4e791caa429fa73f8929405651fd.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/6e640b9ef3d54a9492f1969ec3e00328.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/e70c515347964b78b8f770f68cf09038.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/10f15b61f2db432d8aad62592868a2f9.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/43a9284ead2e4a71bb68c0bc12dacae7.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/11adf95c05a44c2ab189ee462df13a77.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/0adc300b01ff4883baeb3d2403cf29ea.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/9b8a427e718a435ab6d14bdf1bde0bbd.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/e940aa43932f48dcb62e7c72a0dab977.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/0fc4b2de486e4d66aba043ed2a77914c.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/777ec7cf528b4e4ea24a00d79a6b94c9.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/883a72ebb704471b89b67c6daf17583e.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/fafa99b4cb174513824128054324937d.png)
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/ad2ac34750b04349a6bfcfc222dea1a3.png)
(Ⅰ)求
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/d8e98c0f0e604ac7910e3fa5cd5a2a74.png)
(Ⅱ)求
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572555846664192/1572555990556672/STEM/77b6a5cfee71493cbfb9440a5a891a30.png)
您最近一年使用:0次
2016-12-04更新
|
2163次组卷
|
4卷引用:2016届湖北省襄阳五中高三5月高考模拟一文科数学试卷
解题方法
3 . 平面直角坐标系中,点
、
是方程
表示的曲线
上不同两点,且以
为直径的圆过坐标原点
,则
到直线
的距离为( )
![](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/f33031d14b1ce7df1f07e75072840ba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
A.2 | B.![]() | C.3 | D.![]() |
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4 . 参数方程是以参变量为中介来表示直线或曲线上点的坐标的方程,是直线或曲线在同一坐标系下的另一种表现形式.很多曲线(如心脏线、螺线、玫瑰线)都可以用参数方程呈现.在平面直角坐标系
中,直线
的参数方程式
(
为参数),其中
,角
为直线
的倾斜角.曲线
的参数方程是
(
为参数).其中
,直线
与曲线
相交于
、
点.
(1)根据以上的参数方程求出直线
的一般式方程和曲线
的标准方程;
(2)设点
,设点
对应的参数为
,试证明:
;
(3)试问是否存在角
,使得对于任意的点
,表达式
均为定值
,若存在,请求出
及值
(结果用
,
表示);若不存在,请说明理由.
![](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/e9b1cf149172b6c4a6526b25aba683be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1d5e2dfa2d5b134c85995877eff156b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73dd51ce19cf9b0ebfa8e42190c72bbf.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e77eee60e92c3e08a5877062cd1e925f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a990942b9fa26d28cee8579325da3675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(1)根据以上的参数方程求出直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93bb2baf350ed7e3490fd9e7399ce5c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d9fd58e71dcae6cafaf9037d20ebd76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39b1c2f6f5103b4a981e417b620dd239.png)
(3)试问是否存在角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93bb2baf350ed7e3490fd9e7399ce5c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6df16c0ff148acd2c4eac082120e43be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291f17141e5dfbb8e129a9e59d23c120.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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