名校
解题方法
1 . 已知椭圆
(
)的左焦点为
,右顶点为
,上顶点为
,现过
点作直线
的垂线,垂足为
,若直线
(
为坐标原点)的斜率为
,则该椭圆的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5076829e649b3f3866d4a7e07a5713e4.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b283e4d7375d770823775e4036c9f6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be99fa94a1f3e4964fcc13a14fab9ba5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/248e9976db4d941ea91c8a2648ce0125.png)
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2020-11-28更新
|
566次组卷
|
2卷引用:吉林省吉林市第一高级中学2020-2021学年度高二上学期期中考试数学试题
2 . 在平面直角坐标系
中,点
在直线
上,则
的最小值为__________ ,此时P点的坐标为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc8b515c0b57767af60c121f89277af2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
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2020-08-10更新
|
247次组卷
|
2卷引用:江苏省淮安市盱眙县马坝高级中学2019-2020学年高一下学期期中数学试题
名校
3 . 已知点
在抛物线
上,过点P作两条直线分别交抛物线C于相异两点A,B,若直线
,
的倾斜角互补,则直线
的斜率为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13f33bfa6f2e06eed89a43235b3f3959.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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2020-07-23更新
|
546次组卷
|
4卷引用:河南省2020届高三6月质量检测数学(理科)试题
4 . 当实数x,y满足不等式组
时,恒有
,则实数a的取值范围是___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633e76f74846aa985172cd06d354766.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe33aed442a84dc4c962036728c4301.png)
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名校
5 . 若直线
与不等式组
表示的平面区域有公共点,则实数k的取值范围是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/816d1f63b737faba12ab856d7e5dc885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f4ff9eabefeee3368ae4eeb11f6874b.png)
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名校
解题方法
6 . 已知椭圆方程为
,
是椭圆上的任意三点(异于椭圆顶点),若存在锐角
,使
(
为坐标原点)则直线
的斜率乘积为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0671de43e4dcd01182723720248777e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54d665f4a27463efd626ea1894d2a027.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22a887617b1126a28868fbc1629b8c7f.png)
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名校
7 . 已知
为圆
上任意一点,则
的最大值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bec550c01b4f075f22ab67f5e55ed5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac76cccc78ea943676c28a3872e1c40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96930c90d5471753590f51c4bebff85c.png)
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2020-05-01更新
|
849次组卷
|
7卷引用:江苏省南通市如东高级中学2019-2020学年高一下学期4月阶段测试数学试题
8 . 已知
,
,设直线
,其中
,给出下列结论:
①直线
的方向向量与向量
共线;
②若
,则直线
与直线
的夹角为
;
③直线
与直线
(
)一定平行;
写出所有真命题的序号________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb66f4db41478c23128adc14f2796556.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8267f0c85f78a9910b9528394eae338.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79c38a6ef0cbe22933427678ff32ba0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0baedc4d7e690ab3f7d80d30ba0a9efe.png)
①直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55ab1e3217a18c9119740c8055adc4f8.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b495a7a39cd372ac8aa24132c4459c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a4ff8ada7b7eec2b5121abd0f094e89.png)
③直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bab8604e52c97fe120889ef95031d46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37fa7087972cc3cbf6f5276059a527e2.png)
写出所有真命题的序号
您最近一年使用:0次
2020-03-05更新
|
239次组卷
|
3卷引用:上海市复旦大学附属中学2015-2016学年高二上学期期中数学试题
上海市复旦大学附属中学2015-2016学年高二上学期期中数学试题(已下线)专题3.1 坐标平面上的直线【易错题型专项训练】-2020-2021学年高二数学下学期期末专项复习(沪教版)陕西省咸阳市武功县普集高中2022届高三实验班下学期3月月考理科数学试题
名校
9 . 已知抛物线
的焦点为
,准线为
,点
是抛物线
上第一象限内一点,点
在
上,直线
与
轴相交于点
,若
,则直线
的斜率为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac34a034349caabc070219cb30194cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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10 . 下列四个命题:①直线
的斜率
,则直线
的倾斜角
;②直线
:
与以
、
两点为端点的线段相交,则
或
;③如果实数
满足方程
,那么
的最大值为
;④直线
与椭圆
恒有公共点,则
的取值范围是
.其中正确命题的序号是______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77fa02ad20089ec18e6afdebedc44b90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cd920da7ae8449562b721495682e8b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6767830cc1811f0f4ea5a008fdc7e723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98e5cf0973c93007ac0fffa0ef07bf4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b179b0476394291cacd6fe1832d6578.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6767830cc1811f0f4ea5a008fdc7e723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e030e40306ef61056e68956d0fbcef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d191d6de821fbb06a51b5a20112db6de.png)
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