名校
1 . 已知函数
.
(1)讨论
的单调性;
(2)设
是两个不相等的正数,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6200b6506e418f29aede10944d81ba86.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db17926bab3d3e998a3aa1d02f540e24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/079b622ad170180cc191610145285821.png)
您最近一年使用:0次
2023-01-10更新
|
3618次组卷
|
8卷引用:广东省肇庆市2023届高三第二次教学质量检测数学试题
名校
解题方法
2 . 已知函数
(
,
)在区间
上总存在零点,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e3702cc4835758033a73fe8c9033b3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dd0914dc4d4c7f75710ff460a286fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c1756b564bf1d998d8179637011c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dc928e91c639ff3ad4d707248251bbd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 已知函数
,
.
(1)判断函数
的单调性;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f0f82d86e0294a5dbeecce7abfaa032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3311d17fa5bf560a13c02991a28c7130.png)
您最近一年使用:0次
2023·河北·模拟预测
名校
解题方法
4 . 如图,用一垂直于某条母线的平面截一顶角正弦值为
的圆锥,截口曲线是椭圆,顶点A到平面的距离为3.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/030c760c-c753-4169-b610-21ab5b11bd12.png?resizew=181)
(1)求椭圆的离心率;
(2)已知P在椭圆上运动且不与长轴两端点重合,椭圆的两焦点为
,
,证明:二面角
的大小小于
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/030c760c-c753-4169-b610-21ab5b11bd12.png?resizew=181)
(1)求椭圆的离心率;
(2)已知P在椭圆上运动且不与长轴两端点重合,椭圆的两焦点为
![](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/7c29eadbcfaf2fb50b07d0f5fa165a0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
您最近一年使用:0次
名校
5 . 已知
则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a4274a91e89f7037ce43dac2c88de6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-01-05更新
|
496次组卷
|
2卷引用:四川省乐山市高中2023届高三第一次调查研究考试文科数学试题
名校
解题方法
6 . 已知函数
.
(1)求函数
的最小值;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84407d45733b9082ca374dbde6313e86.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92925b46af3cc3cb9c40fb70d66f2a42.png)
您最近一年使用:0次
2023-01-05更新
|
821次组卷
|
3卷引用:广西梧州市2023届高三上学期第一次模拟测试数学(文)试题
名校
7 . 已知函数
,
在
处取到极值.
(1)求
,并指出
的单调递增区间;
(2)若
与
有两个交点
,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a61082b7e56bb497b4fa348427024dcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187c21027ff08411931d32c530b64fd3.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af79f45b5880c72a349500da9d8e118d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fabdf67dafc59991359f8146c3c360a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9145ac160fc29c775dfd585bc0487d3.png)
您最近一年使用:0次
2023-01-05更新
|
1031次组卷
|
3卷引用:2023届新高考高三模拟数学试题
解题方法
8 . 已知函数
.
(1)若
最小值为0,求
的值;
(2)
,若
,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f062f43e3e079e09d9b9216c43ffe1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a76b47ad10cfcc9cfbba8643adc3ee9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cdd2c212dd32f54cef40fc261171961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f42342632cbd8e9cfbae17b76d94b033.png)
您最近一年使用:0次
解题方法
9 . 已知函数
.
(1)若
是函数
的极值点,求
的单调区间;
(2)证明:当
时,曲线
上的所有点均在抛物线
的内部.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93c2755588a0e553d5f1eb65e145419d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/849944ed52b2641ae5ba24d85ea4e754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52ad7c068b9b7c0fd764cf7746407079.png)
您最近一年使用:0次
解题方法
10 . 已知函数
(1)当
时,求函数
的最小值;
(2)若关于x的方程
有两个不同的实根,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0ed184d7e8c2bb478f4f5710bb836b3.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa662f0273f0921c1fa4727f632395.png)
(2)若关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34f16d7a9d2ce1f908ff31e2cdbc8ecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df3da00fe1feafb42d7e2254dd5f8589.png)
您最近一年使用:0次
2022-12-30更新
|
556次组卷
|
4卷引用:广西玉林、贵港、贺州市2023届高三联合调研考试(一模)数学(理)试题