名校
1 . 已知正数
满足
,则
的最小值是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/431657d0c484c120bdc70c056077a735.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f29d5f376c75c41ae6af0c8a8565449.png)
您最近一年使用:0次
2022-12-29更新
|
2037次组卷
|
5卷引用:天津市耀华中学2022-2023学年高三上学期第三次月考数学试题
天津市耀华中学2022-2023学年高三上学期第三次月考数学试题(已下线)专题5-1 均值不等式及其应用归类(讲+练)-32023届天津市普通高考数学模拟卷(三)天津市南开中学2023届高三统练24数学试题(已下线)专题03 均值不等式及其应用 (2)
名校
2 . 已知函数
有最大值
,
(1)求实数
的值;
(2)若
与
有公切线
,求
的值.
(3)若有
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91c20849a830a86f287b7913a7b4652.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12be206d66e65eb92ef08bad8cd8f71d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/845e5670761cc50147a6f50bc2a30b60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c939c087e55933859467ac8c5c57dfce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a18d6ca6f17a219faad5eebc5ec5f1.png)
(3)若有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b867c903bdbadb2f47301f64fa3213f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a18d6ca6f17a219faad5eebc5ec5f1.png)
您最近一年使用:0次
3 . 已知数列
是公差为2的等差数列,其前8项的和为64.数列
是公比大于0的等比数列,
,
.
(1)求数列
和
的通项公式;
(2)记
,
,求数列
的前
项和
;
(3)设
,记
,证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4995fa0403e013d888c0935ebfe15024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd86fd3108963fbf87c75d504fa40cf.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9363d6de080c31391034e050f13f7d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d51f9147b8265c0276c1f2c2659197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9a0d7150fb24be3e28ef7f0e18be93.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/884cf4c71dc0ae5e25767b4501be3fd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f09a097de866137fd0ed832f55f48902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ae9e3d18bf3a6124f1692f8381554ad.png)
您最近一年使用:0次
名校
解题方法
4 . 已知
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d8e6690f1c8bd8f2b865b2de904c2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c444159454d3091a5b39a3acc56f71a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e137a8c0a6f3ad52b23709903cf3fcb7.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
5 . 已知椭圆
:
过点
,且该椭圆长轴长是短轴长的二倍.
(1)求椭圆
的方程;
(2)设点
关于原点对称的点为
,过点
且斜率存在的直线
交椭圆
于点M,N,直线MA,NA分别交直线
于点P,Q,求证
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a979a45bc5debf695297933b6fdf8a86.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee07d86765c4fb74ac647742f16bd57c.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/a089c207e39a24d0d82aa853ac2bbb8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15d9d3102e916e7f1900b39f4b8b2868.png)
您最近一年使用:0次
2022-12-29更新
|
501次组卷
|
2卷引用:陕西省西安市蓝田县2021-2022学年高二上学期期末理科数学试题
名校
解题方法
6 . 已知圆M:
的圆心为M,圆N:
的圆心为N,一动圆与圆N内切,与圆M外切,动圆的圆心E的轨迹为曲线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d30bb07aa3a594041266cdfdeb42ab.png)
(1)求曲线C的方程;
(2)已知点
,直线l不过P点并与曲线C交于A,B两点,且
,直线l是否过定点?若过定点,求出定点坐标;若不过定点,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df3f96231c15b003adeccf8b05fff07c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac870e89808bf58d955eca4ff13aef0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d30bb07aa3a594041266cdfdeb42ab.png)
(1)求曲线C的方程;
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87c89f4cafedc9cb6a0236f4d4bb7f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b768ea6a05cbf45b28fc46c501ba532.png)
您最近一年使用:0次
2022-12-28更新
|
766次组卷
|
9卷引用:广东省深圳市光明区2021-2022学年高二上学期期末数学试题
广东省深圳市光明区2021-2022学年高二上学期期末数学试题(已下线)第09讲 高考难点突破一:圆锥曲线的综合问题(定点问题) (精讲)-1山东省潍坊市潍坊第一中学2021-2022学年高二上学期期末数学试题(已下线)高二上学期期末【压轴60题考点专练】(选修一+选修二)-2022-2023学年高二数学考试满分全攻略(人教A版2019选修第一册)山东省临沂市莒南第一中学2022-2023学年高二上学期期末数学试题(已下线)高二数学上学期期末模拟试卷01(选择性必修第一册+数列)-【题型分类归纳】2022-2023学年高二数学同步讲与练(人教A版2019选择性必修第二册)湖北省黄冈市黄梅县国际育才高级中学2023-2024学年高二上学期12月月考数学试题湖南省永州市祁阳县第四中学2023-2024学年高二上学期期中数学试题江苏省镇江市镇江中学2022-2023学年高二上学期期末数学试题
7 . 如图,抛物线
与 x 轴的负半轴交于点A,对称轴经过顶点B与 x 轴交于点M.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/c7e55872-e220-4f74-9bbc-f7bfd5d79e90.png?resizew=176)
(1)求抛物线的顶点B的坐标(用含m的代数式表示);
(2)连结BO,若BO的中点C的坐标为
,求抛物线的解析式;
(3)在(2)的条件下,D在抛物线上,E在直线BM上,若以A、C、D、E为顶点的四边形是平行四边形,求点D的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de2085061a163301b13d0703fd4325cc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/c7e55872-e220-4f74-9bbc-f7bfd5d79e90.png?resizew=176)
(1)求抛物线的顶点B的坐标(用含m的代数式表示);
(2)连结BO,若BO的中点C的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57f3667ce2ba08aaff676fdb400431c.png)
(3)在(2)的条件下,D在抛物线上,E在直线BM上,若以A、C、D、E为顶点的四边形是平行四边形,求点D的坐标.
您最近一年使用:0次
名校
解题方法
8 . 在《九章算术》中,底面是直角三角形的直三棱柱被称为“堑堵”.如图,在堑堵
中,
是
的中点,
,若平面α过点P,且与
平行,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/2b427620-46d7-4f5b-bc6a-0efa94a59423.png?resizew=145)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ba708880f5eb782acbf2c961c2494c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/2b427620-46d7-4f5b-bc6a-0efa94a59423.png?resizew=145)
A.异面直线![]() ![]() ![]() |
B.三棱锥![]() ![]() |
C.当平面α截棱柱的截面图形为等腰梯形时,该图形的面积等于![]() |
D.当平面α截棱柱的截面图形为直角梯形时,该图形的面积等于![]() |
您最近一年使用:0次
2022-12-28更新
|
1333次组卷
|
10卷引用:吉林省部分学校2022-2023学年高三上学期12月大联考数学试题
名校
解题方法
9 . 已知函数
,
的定义域为
,若对
,
,
,
成立,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e6357b4c2d778358dee5d222dc82f9.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/420a1784f8cbb7fd5536af525e66112d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5a507b9ebb7edf6eb7ece7c91e56369.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/113c2a2712c6394ed86024edc460d70b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a669b4be098e4e54f5b06d92835f55c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e6357b4c2d778358dee5d222dc82f9.png)
您最近一年使用:0次
名校
解题方法
10 . 已知椭圆
的左、右焦点分别为
、
,设
是第一象限内椭圆
上一点,
、
的延长线分别交椭圆
于点
、
,直线
与
交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/7b718a14-066c-4f9c-aca6-52d962954498.png?resizew=165)
(1)当
垂直于
轴时,求直线
的方程;
(2)若
关于原点的对称点为
,点
在线段
上,且满足
,求
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6de03e2b3bef75237eb998d6e11d3.png)
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a86380a6d6501f6504dcb4aa5e3099f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae863e7a1f1fed09f1075de4a817c63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02adfa16c275344856401c6f63f3c6ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61228c72df45a3809cb6729f8227721b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/7b718a14-066c-4f9c-aca6-52d962954498.png?resizew=165)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69c81d490c018a166d9970b1b5ea0a63.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae863e7a1f1fed09f1075de4a817c63.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/9586d7764a68b4097d5885773522bb3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e99ae76e5949bb0aa5558117d74a54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a94685fdd43c4d319d7884f38eac9ed.png)
您最近一年使用:0次