1 . 已知动圆
经过定点
,且与圆
:
内切.
(1)求动圆圆心
的轨迹
的方程;
(2)设轨迹
与
轴从左到右的交点为
,
,点
为轨迹
上异于
,
的动点,设
交直线
于点
,连接
交轨迹
于点
,直线
,
的斜率分别为
,
.
①求证:
为定值;
②证明:直线
经过
轴上的定点,并求出该定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866502435d9ea08c6d3a5e304a8986c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8387b687579c4d5152175c9d19e24232.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9811dd726ed27d28ad5a8e83fbb20ed6.png)
(1)求动圆圆心
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设轨迹
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/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/30513ea48bc1ef3ae78adac83d894f14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ef79861421b414b455a090a3ef04fef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95b51a4949896526cfc3c076ea8dec8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80672dda9430cb42b3136bcb1b67bbad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/128147bd4834566a78b4e9d2a3b2139c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb4a51e6728d354cc1c3d32e2d4368d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729d727db2181aca4e8a6455d10cfe28.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a6b1769274eee3ce2896cb3513d50f8.png)
②证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e430f13f42cf2d44aa0f0e20b959684f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
2024-01-11更新
|
628次组卷
|
11卷引用:陕西省西安市长安区第一中学2023-2024学年高二下学期期中考试数学试题
名校
解题方法
2 . 已知函数
,
.
(1)若函数
在R上单调递减,求a的取值范围;
(2)已知
,
,
,
,求证:
;
(3)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d013335d41c7a1e51b381eb8e7ef977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/111870a9ef48f1bb2797ae8f1825a8f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9897559d21ef1971f497be4269b107aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0527a896aec4a245945e5edee00deed.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f6bf190c55c3a0ddbca2ff7a5ecf42.png)
您最近一年使用:0次
2023-12-30更新
|
1117次组卷
|
3卷引用:陕西省名校协作体2024届高三上学期一轮复习联考(四)数学(文)试题
3 . 设直线
,曲线
.若直线
与曲线
同时满足下列两个条件:①直线
与曲线
相切且至少有两个切点;②对任意
都有
.则称直线
为曲线
的“上夹线”.
(1)已知函数
.求证:
为曲线
的“上夹线”;
(2)观察下图:
的“上夹线”的方程,并给出证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70087bf78bee970f6ecf583ca1fccc42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0016d106579d6b26cf2960cf744f317.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d9dc155203792c9983b2118b7730088.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(1)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c043c3bf7b638f8bb635ee098130560.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c31c4f39399ec245a67db2933ed639f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)观察下图:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d08fe48eafb7a58cb673cc4bce2aa0e7.png)
您最近一年使用:0次
名校
4 . (1)证明:当
时,
;
(2)若不等式
对任意的正实数
恒成立,求正实数
的取值范围;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7e5b12719915c134ab756cb09f75c1.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a264a7259b8956b59ef9ef37c9af8855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01a0805acb0016f9851d5d1a49e2b553.png)
您最近一年使用:0次
2017-05-22更新
|
507次组卷
|
3卷引用:陕西省西安交通大学附属中学雁塔校区2022-2023学年高三下学期高考模拟数学试题
名校
解题方法
5 . 已知函数
.
(1)求
的极值;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfcea74d330997ee9c92a223c0335851.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14ef77c5ca443b038dd5be9edd4e05f6.png)
您最近一年使用:0次
2024-06-12更新
|
2010次组卷
|
4卷引用:陕西省西安市第一中学2024届高三第十六次模拟考试数学(文科)试题
陕西省西安市第一中学2024届高三第十六次模拟考试数学(文科)试题2024届山东省威海市高考二模数学试题(已下线)第六套 艺体生新高考全真模拟 (二模重组卷)四川省成都市金堂县淮口中学校2024届高三下学高考仿真冲刺卷(一)文科数学试题
6 . 已知函数
.
(1)讨论函数
的单调性;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/858cbbe1882110dd49240684c3ba24e6.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d191d6de821fbb06a51b5a20112db6de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/141b2bbd98551063847f63aa606010c9.png)
您最近一年使用:0次
7 . 已知椭圆
的左,右焦点分别为
,Q为E短轴的一个端点,若
是等边三角形,点
在椭圆E上,过点
作互相垂直且与x轴不重合的两直线AB,CD分别交椭圆E于A,B,C,D,且M,N分别是弦AB,CD的中点.
(1)求椭圆E的方程;
(2)求证:直线MN过定点;
(3)求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4085b194990fc17f8073878b8eca1a29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/278b99933923773091940d566d36277c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
(1)求椭圆E的方程;
(2)求证:直线MN过定点;
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5585a42c8f07ad90b94ace9db3d78994.png)
您最近一年使用:0次
2024-04-12更新
|
424次组卷
|
2卷引用:陕西省渭南市2024届高三下学期教学质量检测(Ⅱ)数学(文科)试题
名校
解题方法
8 . 已知双曲线
的左、右顶点分别是
,直线
与
交于
两点(不与
重合),设直线
的斜率分别为
,且
.
(1)判断直线
是否过
轴上的定点.若过,求出该定点;若不过,请说明理由.
(2)若
分别在第一和第四象限内,证明:直线
与
的交点
在定直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b30352c43707c4e54b94ce5b61f2e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29dd91ef1fd4c744e89c83b0a6a58152.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/595ba5dc88bf92a4d6a32b81ca103f03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41441b3d2da6447c7545bd8c11821141.png)
(1)判断直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe61d39d080872caa8973a70a3b4955.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a439c8a01a6626d7a3f53af31ef0bcae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2024-04-18更新
|
634次组卷
|
3卷引用:陕西省安康市高新中学、安康中学高新分校2023-2024学年高三阶段性测试(八)理科数学试题
9 . 已知函数
的反函数为
,令![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4633de9335d15d7685bdecb007a3678c.png)
(1)求曲线
在
处的切线的方程;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63131ff320ef2d6aa097b4eebfe38714.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4633de9335d15d7685bdecb007a3678c.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f5a90aeba435af22d6bcdb7b91650b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145c49b856b6df9310f5965e7973cf4.png)
您最近一年使用:0次
名校
解题方法
10 . 已知函数
.
(1)若函数
在
上单调递增,求实数
的值;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8787d90a6ad512aee79e3de7486eb9de.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2fa47404af9de30af53b11f54c0527.png)
您最近一年使用:0次
7日内更新
|
360次组卷
|
3卷引用:陕西省西安市第一中学2024届高三下学期高考预测数学(文科)试题