名校
1 . 已知函数
,
(1)若存在
,使得不等式
有解,求实数
的取值范围;
(2)若函数
满足
,若对任意
且
,不等式
恒成立,求实数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbd9e52b79fb84c320dc522e13d4f0b.png)
(1)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd0f1e3e3b41948f1b3d287c4b0cb44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfda93888e67df317e8b59b9fa8c79da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bfe3e041b26dd1024a6ca08c7f1f4c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f0e9c04402a0ffdaa25c3e3c82c7dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe55610b65b7bb3ec6defa8aa4fa73e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2020-03-15更新
|
685次组卷
|
3卷引用:2020届江苏省淮安市涟水中学高三上学期期中数学(理)试题
名校
解题方法
2 . 定义:给定整数i,如果非空集合满足如下3个条件:
①
;②
;③
,若
,则
.
则称集合A为“减i集”
(1)
是否为“减0集”?是否为“减1集”?
(2)证明:不存在“减2集”;
(3)是否存在“减1集”?如果存在,求出所有“减1集”;如果不存在,说明理由.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfc7338b2a8a4a7d06acd6eb1b446564.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebabd7323bae39388835a33e09046c53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669926e4732ba3eca48e018aaebe7079.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/957d41dbe52b49c3a7339e3519a3fe84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45251c3475305d50c946539a1bd6a5f8.png)
则称集合A为“减i集”
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94ed72c5ada5b4d689310406b7cef32f.png)
(2)证明:不存在“减2集”;
(3)是否存在“减1集”?如果存在,求出所有“减1集”;如果不存在,说明理由.
您最近一年使用:0次
2020-03-14更新
|
1148次组卷
|
7卷引用:2020届北京市中国人民大学附属中学高三开学复习质量检测数学试题
2020届北京市中国人民大学附属中学高三开学复习质量检测数学试题(已下线)专题03 集合的运算压轴题型-2021-2022学年高一《新题速递·数学》(人教A版2019)北京市海淀区中国人民大学附属中学2023届高三下学期开学摸底练习数学试题北京市人大附中2023届高三下学期2月开学考数学试题(已下线)高一上学期期中【压轴60题考点专练】(必修一前三章)-2022-2023学年高一数学考试满分全攻略(人教A版2019必修第一册)北京市海淀区宏志中学2023-2024学年高一上学期期中考试数学试卷重庆市西南大学附属中学校2023-2024学年2023-2024学年高二下学期3月测试数学试题
解题方法
3 . 已知函数
,其中![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
时,写出函数
的单调区间;
(2)若函数
为偶函数,求实数
的值;
(3)若对任意的实数
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679c4a781050db15fe8f6c6395c0f15f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若对任意的实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01adffb67cb43f25dbbf5b0a781455dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfcc6401b133bbd705bdef842328bded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解题方法
4 . 如图,在直角坐标系
中,已知点
,
,直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f7b16d65f1b2b8bea8cf4a83fde925.png)
将
分成两部分,记左侧部分的多边形为
.设
各边长的平方和为
,
各边长的倒数和为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/4ce6cd74-5906-4c31-b0a7-e909a3c4af60.png?resizew=177)
(Ⅰ) 分别求函数
和
的解析式;
(Ⅱ)是否存在区间
,使得函数
和
在该区间上均单调递减?若存在,求
的最大值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d295a4cc3a58f9f38ee98337313c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c06de9b0884908762a3f5440f7c93059.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f7b16d65f1b2b8bea8cf4a83fde925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d358866a9bfb5ea6b9f1a612a7e119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c8ca569e742d9eeee3b85f61bd8e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3466b71d1d9117438ed50388a57d9397.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/4ce6cd74-5906-4c31-b0a7-e909a3c4af60.png?resizew=177)
(Ⅰ) 分别求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c8ca569e742d9eeee3b85f61bd8e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3466b71d1d9117438ed50388a57d9397.png)
(Ⅱ)是否存在区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277e0be448b4955903e81e8795e45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c8ca569e742d9eeee3b85f61bd8e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3466b71d1d9117438ed50388a57d9397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13502d46b8563c54c09b29b20b3006a4.png)
您最近一年使用:0次
解题方法
5 . 如图,某市建有贯穿东西和南北的两条垂直公路
,
,在它们交叉路口点
处的东北方向建有一个荷花池,荷花池的外围是一条环形公路,荷花池中的固定观景台
位于两条垂直公路的角平分线
上,
与环形公路的交点记作
.游客游览荷花池时,需沿公路
先到达环形公路
处.为了分流游客,方便游客游览荷花池,计划从靠近公路
,
的环形公路上选
,
两处(
,
关于直线
对称)修建直达观景台
的玻璃栈道
,
.以
,
所在的直线为
,
轴建立平面直角坐标系
,靠近公路
,
的环形公路可用曲线
近似表示,曲线
符合函数
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/6dada63c-d9e0-422a-9af9-e9f0179900fe.png?resizew=170)
(1)若
百米,点
到
的垂直距离为1百米,求玻璃栈道
的总长度;
(2)若要使得玻璃栈道
的总长度最小为
百米,求观景台
的位置.
![](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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95df8aa0fabb9ff4594fbda756fe40e8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/6dada63c-d9e0-422a-9af9-e9f0179900fe.png?resizew=170)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09fcd4286cd044729071fb7ff9117a5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ac656ec89607f52b5353dba400fab6.png)
(2)若要使得玻璃栈道
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ac656ec89607f52b5353dba400fab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2793aa39b517d1a5e7ca2d8243710c8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2020-03-09更新
|
393次组卷
|
4卷引用:2020届江苏省苏州市张家港市高三阶段性调研测试数学试题
6 . 习近平总书记指出:“我们既要绿水青山,也要金山银山”.新能源汽车环保、节能,以电代油,减少排放,既符合我国的国情,也代表了世界汽车产业发展的方向.为响应国家节能减排的号召,某汽车制造企业计划在2019年引进新能源汽车生产设备,通过市场分析,全年需投入固定成本2500万元,每生产
(百辆),需另投入成本
万元,且
,该企业确定每辆新能源汽车售价为6万元,并且全年内生产的汽车当年能全部销售完.
(1)求2019年的利润
(万元)关于年产量
(百辆)的函数关系式
(其中利润=销售额-成本)
(2)2019年产量为多少百辆时,企业所获利润最大?并求最大利润.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dce9d39dc87091db9bdcc05b8fb1a10a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2440ac29d9ce90aea5226f61880438e5.png)
(1)求2019年的利润
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a55300ca4f2eee3edb6b5374310ce8e.png)
(2)2019年产量为多少百辆时,企业所获利润最大?并求最大利润.
您最近一年使用:0次
2020-03-04更新
|
442次组卷
|
3卷引用:山东省济宁市兖州区2019-2020学年高二上学期期中数学试题
名校
解题方法
7 . 已知函数
(
且
).
(1)求函数
的定义域,并求出当
时,常数
的值;
(2)在(1)的条件下,判断函数
在
的单调性,并用单调性定义证明;
(3)设
,若方程
有实根,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289cf9906f4301f108fa50b991298e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752a12112e7a21c08f76ee99f7bf188c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)在(1)的条件下,判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89a51a03f3e4d8e559b9850e4222c463.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff1b756c50cb308aeeb77accb9c10815.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1efbe3b46023d8fbfd4a78902ff9c25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-03-04更新
|
429次组卷
|
2卷引用:广东省汕头市金山中学2019-2020学年高一上学期期中数学试题
解题方法
8 . 已知函数
,
,且
是R上的奇函数,
(1)求实数a的值;
(2)判断函数
)的单调性(不必说明理由),并求不等式
的解集;
(3)若不等式
对任意的
恒成立,求实数b的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29de9c1b4f0b07f0b945e6d825242e0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ab32cdfbbbe4a5575c65e5917bb53f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(1)求实数a的值;
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a1d629c2b77b4d297d1bfa69a45756c.png)
(3)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481a47fe867a68cf77b0a58efbf0b025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3606fd3966dc72e0f8a32047945a86e2.png)
您最近一年使用:0次
名校
解题方法
9 . 已知奇函数f(x)
,函数g(θ)=cos2θ+2sinθ
,θ∈[m,
].m,b∈R.
(1)求b的值;
(2)判断函数f(x)在[0,1]上的单调性,并证明;
(3)当x∈[0,1]时,函数g(θ)的最小值恰为f(x)的最大值,求m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de511e0b722a4b84a3ca7fd28cfc39ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/575fdebc8f8ad46f80ec388e1784ee23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e09bd8b1da7682ac91bc14552870e0.png)
(1)求b的值;
(2)判断函数f(x)在[0,1]上的单调性,并证明;
(3)当x∈[0,1]时,函数g(θ)的最小值恰为f(x)的最大值,求m的取值范围.
您最近一年使用:0次
2020-03-04更新
|
436次组卷
|
2卷引用:江苏省无锡市江阴市2019-2020学年高一上学期期末数学试题
名校
解题方法
10 . 已知
,
.
(1)若函数
在
为增函数,求实数
的值;
(2)若函数
为偶函数,对于任意
,任意
,使得
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/482de0ec9b7785722b984bb24cb1ac97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6acd45ea1db83ed38b951daf2ccde56d.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b029e85e686623cdef977b2cb1f207a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3306b0d881e80bc9d0ac85d4a736b88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ba8542fbe02e78cf3948c9abea9855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2f3f41ca28e9b91f24579f7d5680a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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8卷引用:四川省绵阳市三台中学实验学校2019-2020学年高一上学期期末数学试题