名校
1 . 某校为促进学生积极参加体育锻炼,计划举办一次运动会,并为运动会设计了一款纪念品.如图所示为纪念品的平面图,其中四边形
为等腰梯形,A,B在
上,且
的半径为
,圆心
到
的距离为
,
,
.定义高径比
,已知当
时,纪念品的总体设计较为协调,符合大众审美.
![](https://img.xkw.com/dksih/QBM/2022/7/11/3020354608062464/3020432973848576/STEM/e2eb810e18dd4f6b92d007fcaacb31e1.png?resizew=145)
(1)设梯形
的高为
,求
关于
的函数关系式;
(2)当梯形
的面积
取得最大值时,判断该纪念品是否符合大众审美.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8fa37d1cbf6eb0cd960e9f0a4b91c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4604d0cbb14286c6d52be94d274fe37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdd837ded498831fbc65513b04e2e67f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6af2f597ea3f4dcfb89acb19a4ea6355.png)
![](https://img.xkw.com/dksih/QBM/2022/7/11/3020354608062464/3020432973848576/STEM/e2eb810e18dd4f6b92d007fcaacb31e1.png?resizew=145)
(1)设梯形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
(2)当梯形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
2022-07-11更新
|
380次组卷
|
2卷引用:福建省漳州市四校2021-2022学年高二下学期期末联考数学试题
2 . 对于方程为
的曲线
给出以下三个命题:
(1)曲线
关于原点对称;(2)曲线
关于
轴对称,也关于
轴对称,且
轴和
轴是曲线
仅有的两条对称轴;(3)若分别在第一、第二、第三、第四象限的点
,都在曲线
上,则四边形
每一条边的边长都大于2;
其中正确的命题是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91fa92ca927b3ecabc4bf26816a2d66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)曲线
![](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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48593b2bdb51550ec0a2b9d5893d36fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389bc3f29c058067e06e0d0d2be399da.png)
其中正确的命题是( )
A.(1)(2) | B.(1)(3) | C.(2)(3) | D.(1)(2)(3) |
您最近一年使用:0次
2020-02-06更新
|
613次组卷
|
3卷引用:上海市青浦高级中学2017-2018学年高二上学期12月月考数学试题
3 . 已知函数
设
,若
中有且仅有4个元素,则满足条件的整数
的个数为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20bfdca6e2abd5df95224ccefa4db94d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7f906b1b898a16b70a9bd8141547a2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
4 . 设
是定义在
上的增函数,
,且满足:①任意
,
;②任意
,有
.
(1)求
的值;
(2)求
的表达式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fcec7af3520884b173b29bda6c657a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a227a694dc404d1184578c7d278fd8d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba056dc2ab77f65931d85b673060f735.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a72e549f0c05e65a880149db55efa39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51a54da56300aa0ca6d860e7dab876e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d7b83621df77b8aff15c3661e9ad43.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58bb04544fd20027204021a06b256a1b.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fcec7af3520884b173b29bda6c657a.png)
您最近一年使用:0次
2017-06-29更新
|
678次组卷
|
2卷引用:【全国百强校】江苏省海安高级中学2018-2019学年高二3月月考数学试题
名校
5 . 对函数
,如果存在
使得
,则称
与
为函数图像的一组奇对称点.若
(
为自然数的底数)存在奇对称点,则实数
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efe8dc8e5def7d46b88535453ae1fd96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d79bf13db2b3cdbac5104b48f68fa2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea9470db56f4397747215dcb7a48bd6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b658eec8be4b6f537092e56d2913f12d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94cd92e2abb80a8125a2d4841c45dead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-03-30更新
|
1405次组卷
|
5卷引用:安徽省六安市第一中学2019-2020学年高二上学期第一次段考数学(理)试题