1 . 若过点
仅可作曲线
的两条切线,则
的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2c3091b94ba135ae28c882c9b71aacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa17e5fa6b3de4403149e2f39feaaee5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
2 . 已知抛物线
经过点
中的两个点,准线为
,
为坐标原点.
(1)求准线
的方程;
(2)过点
的直线与抛物线
交于
两点,直线
与
轴交于点
,直线
与
交于点
,过点
作
的垂线,垂足为
,证明:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e928b6c767a9fb8f41d88ec5e81a1bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c9ea663a2ddd6ef0e00f272f84f7f72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)求准线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d56ab70e602f2e2e291df643ab209162.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f09757d013574cf058d5bb944fdf034a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86e203b7c9a6600e0272c58a23733490.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b10a7cf5481c31fae0b86426f8318ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dea1bd3d0dd84b8b6f6ff634c5600c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dea1bd3d0dd84b8b6f6ff634c5600c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8fc3f8440d6e7a9511507e1bb618eac.png)
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3 . 在双曲线
中,把以原点为圆心、实轴长为直径的圆
叫做双曲线
的“伴随圆”,过双曲线
上任意一点
(顶点除外)作“伴随圆”
的两条切线,切点分别为
、
,若直线
在
、
轴上的截距分别为
、
,双曲线
的离心率为2,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316121fda44788cf7309270a426389e9.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316121fda44788cf7309270a426389e9.png)
您最近一年使用:0次
4 . 已知函数
的极大值点为0,极小值点为
,且极小值为0,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e33f4803b99e4590b08caa176f91815.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1f07948e9258b482a2164ac871f90f9.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
5 . 已知函数
.则“
”是“
为奇函数”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd030a1815ee2c9b1c6e0e05f2f3a290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ab38bf4a7be677eb105c53781d154b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.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 |
您最近一年使用:0次
2024-05-24更新
|
244次组卷
|
3卷引用:河南省驻马店市新蔡县第一高级中学2023-2024学年高一下学期5月月考数学试题
6 . 若两个函数
和
存在过点
的公切线,设切点坐标分别为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da03fbf994015e5a3a03de28734e0a1a.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc91186336b2d99e88fe87e381c775c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028e90690c7cf3cd03405f2c7bc07122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7362fa526a84b0ce2f5a2021dbc44399.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f455378328d1f31e18c413f327cb81a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da03fbf994015e5a3a03de28734e0a1a.png)
您最近一年使用:0次
名校
7 . 已知P,Q是抛物线
上的两个动点,
,直线AP的斜率与直线AQ的斜率之和为4,若直线PQ与直线
平行,则直线PQ与
之间的距离等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c1ba86ffc6e5542b62319848c14acaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bc59979afc2620b046822c643391168.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcefd18333f55a3aa65c444d68feed1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2024-05-22更新
|
237次组卷
|
2卷引用:河南省九师联盟2024届高三下学期5月联考数学试题
名校
8 . 已知函数
,
,若函数
没有零点,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f86d1984584fa702d7bc16b8716bdcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-05-22更新
|
479次组卷
|
3卷引用:河南省九师联盟2024届高三下学期5月联考数学试题
9 . 已知抛物线
,点
在
的准线上,过
的焦点
的直线与
相交于
两点,则
的最小值为__________ ,若
为等边三角形,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bee8e70f1fab639be1636c7bce0477.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c1ba86ffc6e5542b62319848c14acaa.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bee8e70f1fab639be1636c7bce0477.png)
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2024-05-20更新
|
737次组卷
|
4卷引用:河南省三门峡部分名校2024届高三下学期高考模拟考试(一)数学试题
河南省三门峡部分名校2024届高三下学期高考模拟考试(一)数学试题山东省泰安市2024届高三下学期高考模拟((三模))数学试题(已下线)第三套 艺体生新高考全真模拟 (三模重组卷)山东省菏泽市2024届高三下学期模拟预测数学试题(三)
10 . 已知函数
.
(1)求
的极值;
(2)若过点
可以作两条直线与曲线
相切,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc1b193aa193153eb402df8560778e6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/153fd5ba2a1a36ea1a7aee469663ddbd.png)
您最近一年使用:0次