2019高三·全国·专题练习
名校
1 . 已知抛物线
的焦点为
,点
,
在抛物线
上,过线段
的中点
作抛物线
的准线的垂线,垂足为
,若
,则
的最小值为
![](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/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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/243a9ae75886b75c37f88a0ba655fa31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6ade057ab86a163fe06d4a101b62b5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-04-25更新
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6卷引用:上海市金山中学2019-2020学年高二上学期期末数学试题
上海市金山中学2019-2020学年高二上学期期末数学试题(已下线)【省级联考】2019届高三第二次全国大联考(新课标Ⅱ卷)文科数学试题河北省石家庄正定中学2021届高三上学期第二次半月考数学试题(已下线)考点38 抛物线-备战2021年高考数学(文)一轮复习考点一遍过(已下线)考点40 抛物线-备战2021年高考数学(理)一轮复习考点一遍过福建省莆田第二中学2020-2021学年高二12月月考数学试题
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2 . 焦点在
轴上,焦距为
,且经过点
的双曲线的标准方程为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b7ac31193004dcb7a71e8f657ad897.png)
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2019-04-19更新
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3卷引用:上海市金山区2020-2021学年高二上学期期末数学试题
3 . 已知
、
是椭圆
的两个焦点,点
为椭圆
上的点,
,若
为线段
的中点,则线段
的长为________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2f37a414b061daeb3c858ebf767773.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/bd667e0760bbb6e0b23a581fef05773a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
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2卷引用:上海市金山区2020-2021学年高二上学期期末数学试题
4 . 已知椭圆
,过点
的直线
与椭圆
相交于
两点,若弦
恰好以点
为中点,则直线
的方程为__________ .(写成一般式)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dc555ee95335fccb1fb911f3d7b2122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a75680a9e16ed607cdea14b4b367fd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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5卷引用:上海市张堰中学2016-2017学年高二上学期期末数学试题
上海市张堰中学2016-2017学年高二上学期期末数学试题上海市控江中学2015-2016学年高二上学期期末数学试题天津市南开中学2021-2022学年高二上学期期中数学试题(已下线)第38讲 点差法与定比点差法-2022年新高考数学二轮专题突破精练(已下线)专题12 定比点差法及其应用 微点5 定比点差法综合训练
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解题方法
5 . 已知双曲线
的右焦点与抛物线
的焦点重合,则该双曲线的渐近线方程为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e6dcd52515fe86ac3989adef2939466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3577bf250e9110428ff34f518fbd9f2.png)
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3卷引用:上海市金山中学2015-2016学年高二下学期期末数学试题
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6 .
为双曲线
上位于第一象限内一点,且
,令
,则
的取值范围是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea91a16536500c217485a8a162390f98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d3530ee12bd68b53970b83f28985b31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b7b6df146709ed18d3aea9bdb562b97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
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7 . 方程
的曲线即为函数
的图像,对于函数
,有如下结论:①
在
上单调递减;②函数
不存在零点;③
的最大值为
;④若函数
和
的图像关于原点对称,则
由方程
确定;其中所有正确的命题序号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b934be8ae90a3007c3c94acad13272f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e2c80aad03f6a37bcbbff9fecd8374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc1638c1bc120bc0690d2dafd2663586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5090da195ccbacf2d85478fd719ab65b.png)
A.③④ | B.②③ | C.①④ | D.①② |
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8 . 如图,在平面直角坐标系
中,
、
分别是椭圆
的顶点.过坐标原点的直线交椭圆于
、
两点,其中
在第一象限.过点
作
轴的垂线,垂足为
.设直线
的斜率为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/10/028a0c88-6000-4805-bd98-b7b0e22078cb.png?resizew=191)
(1)若直线
平分线段
,求
的值;
(2)当
时,求点
到直线
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.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/d80b861ba40387cb2bcd04945f5a371a.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/5963abe8f421bd99a2aaa94831a951e9.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/10/028a0c88-6000-4805-bd98-b7b0e22078cb.png?resizew=191)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e69866076dcff686a05e9e91e61e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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9 . 在△
中,角
,
,
所对的边分别为
,
,
,则“
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2681f0d1732bcaa8d6362fbd1fa6caa2.png)
A.充分而不必要条件 | B.必要而不充分条件 |
C.充分必要条件 | D.既不充分也不必要条件 |
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7卷引用:上海市金山中学2015-2016学年高一下学期期末数学试题
10 . 已知圆M:
,圆N:
直线
分别过圆心M、N,且
与圆M相交于A,B两点,
与圆N相交于C,D两点,点P是椭圆
上任意一点,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e412ffe21583411fca28a0b1845088.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bef6dfb8b9b25938342e180becc97d87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f081d3013df8536a50f9aa730f924b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13c44cfd0b74e9f2b560039867fa6041.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7630dff22439bf0f531d5656ad99d07c.png)
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5卷引用:上海市徐汇区2019届高三上学期期末学习能力诊断数学试题