1 . 已知圆
,圆
与
轴交于
两点,过点
的圆的切线为
是圆上异于
的一点,
垂直于
轴,垂足为
,
是
的中点,延长
分别交
于
.
![](https://img.xkw.com/dksih/QBM/2016/3/3/1572516963794944/1572516969914368/STEM/eb1dabb4047a4f18bc7acdf98107c294.png)
(1)若点
,求以
为直径的圆的方程,并判断
是否在圆上;
(2)当
在圆上运动时,证明:直线
恒与圆
相切.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79382ba44ba669b5d43fdd5427adf16c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89ea803e31d2dedcf0590e0a0475e7ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d58f9019097bd05037aefd5c322916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d58f9019097bd05037aefd5c322916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10b50a0ce4123f2a1d762a76f88982af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9c6b82c0d45b306cff2e86f657e7ef8.png)
![](https://img.xkw.com/dksih/QBM/2016/3/3/1572516963794944/1572516969914368/STEM/eb1dabb4047a4f18bc7acdf98107c294.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0210da9839dce53ae6f0533764d24ea3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2319a01218514917e446dfc807a625ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
您最近一年使用:0次
真题
名校
2 . 已知椭圆
:
.
(1)求椭圆
的离心率;
(2)设
为原点,若点
在椭圆
上,点
在直线
上,且
,试判断直线
与圆
的位置关系,并证明你的结论.
![](https://img.xkw.com/dksih/QBM/2014/6/20/1571782625320960/1571782631030784/STEM/13fb9823a6db4ae8a539266742857113.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc2c17fca5d9b70a31a66e791d830163.png)
(1)求椭圆
![](https://img.xkw.com/dksih/QBM/2014/6/20/1571782625320960/1571782631030784/STEM/13fb9823a6db4ae8a539266742857113.png)
(2)设
![](https://img.xkw.com/dksih/QBM/2014/6/20/1571782625320960/1571782631030784/STEM/0f401ed7508f4b34aecc95c499442ef2.png)
![](https://img.xkw.com/dksih/QBM/2014/6/20/1571782625320960/1571782631030784/STEM/12776267ac5e4f2abbf01d18168119e4.png)
![](https://img.xkw.com/dksih/QBM/2014/6/20/1571782625320960/1571782631030784/STEM/13fb9823a6db4ae8a539266742857113.png)
![](https://img.xkw.com/dksih/QBM/2014/6/20/1571782625320960/1571782631030784/STEM/b79ed6e8c94a4f31bf94f241017938ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107babba45f110012183dc4dc54490f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ada5c15d7b42b2fb2836c3478ae5fb34.png)
![](https://img.xkw.com/dksih/QBM/2014/6/20/1571782625320960/1571782631030784/STEM/0615720cbe5740c1b979453bbc3bd460.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d61985901c2bc698d72ac88f4e1eb65.png)
您最近一年使用:0次
2016-12-03更新
|
5158次组卷
|
9卷引用:2014年全国普通高等学校招生统一考试理科数学(北京卷)
2011·北京朝阳·一模
名校
3 . 已知
,
为椭圆
的左、右顶点,
为其右焦点,
是椭圆
上异于
,
的动点,且
面积的最大值为
.
(Ⅰ)求椭圆
的方程及离心率;
(Ⅱ)直线
与椭圆在点
处的切线交于点
,当直线
绕点
转动时,试判断以
为直径的圆与直线
的位置关系,并加以证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44095accc17467f9721ef46c879d8613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7406e11d72eaece13b00dd40b5c300b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/af2cc5f8cec8c498aa12c99c04e1c97d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
您最近一年使用:0次
2016-11-30更新
|
879次组卷
|
6卷引用:2011届北京市朝阳区高三第一次综合练习数学理卷
(已下线)2011届北京市朝阳区高三第一次综合练习数学理卷2015届福建省福州市第八中学高三毕业班第六次质量检查理科数学试卷(已下线)2013届中国人民大学附属中学高考冲刺二理科数学试卷北京东城区171中学2018届高三上学期期中考试数学试题河南省睢县高级中学(清北部)2021-2022学年高三上学期12月月考数学(理)试题(已下线)2011届年山东省枣庄市高三4模拟考试理数