已知
,
为椭圆
的右焦点,过点
的直线与椭圆在
轴上方相切于点
,则直线
的斜率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/397d7476fadbc4f22e4c7c4fd693a57f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
21-22高三上·江西萍乡·开学考试 查看更多[3]
更新时间:2021-09-10 15:41:48
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相似题推荐
单选题
|
适中
(0.65)
【推荐1】过点
和点
的直线与过点
和点
的直线的位置关系是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4ecac9b79b986cb164919d31b7ed8bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e1a85a657231ef717809d5a839ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c4528bda4a833c5e24aedb9fe17052e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae194a96a10ff35e071bb254420c784e.png)
A.平行 | B.重合 |
C.平行或重合 | D.相交或重合 |
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解题方法
【推荐2】已知圆
过点
,
,则圆心
到原点距离的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee9c730266ecf448c14608e24d37b986.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.1 | D.![]() |
您最近一年使用:0次
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【推荐1】已知F是椭圆
的一个焦点,AB为过椭圆中心的一条弦,则△ABF面积的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b747db7eaf469c6d1607e4b0d028299f.png)
A.6 | B.15 | C.20 | D.12 |
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【推荐2】已知椭圆
上一点
和该椭圆上两动点
、
,直线
、
的斜率分别为
、
,且
,则直线
的斜率![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99e4a41cbe3d1f25154602dee11d36ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c179fe7eff7abfdd092b63c9c1b82d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83d200a411fbc2f50ad72f1fd729a7d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() ![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】已知
三个顶点
,
,
都在曲线
上,且
(其中
为坐标原点),
,
分别为
,
的中点,若直线
,
的斜率存在且分别为
,
,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6205da5e1d2730ee0b3de8bca3e29f5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71c849220a21ce593e4ed9a1f60cbbc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/169c309a205180d9ac766528dab1be8e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】第24届冬季奥林匹克运动会闭幕式,于2022年2月20日在国家体育场(鸟巢)的场馆举行.国家体育场“鸟巢”的钢结构鸟瞰图如图所示,内外两层的钢骨架是离心率相同的椭圆.假设内层椭圆的标准方程为
,外层椭圆的标准方程为
,若由外层椭圆上的一点
向内层椭圆引切线
、
,且两切线斜率都存在,则两切线斜率的积等于( )
![](https://img.xkw.com/dksih/QBM/2022/4/14/2958108894576640/2958549927165952/STEM/36deb73f-6ac6-40df-adab-bc4c66687158.png?resizew=161)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a4c5ff939c836229c3fc0800a1d9fea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2022/4/14/2958108894576640/2958549927165952/STEM/36deb73f-6ac6-40df-adab-bc4c66687158.png?resizew=161)
A.![]() | B.![]() | C.![]() | D.不确定 |
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