1 . 已知函数
,则下列结论错误的是( )
①
时,函数
图象关于
对称;②函数
的最小值为-2;③若函数
在
上单调递增,则
;④
,
为两个不相等的实数,若
且
的最小值为
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83b3fd9d4fa63d1bae1a76a90f0ff9dc.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dcee772e6187ac31d7f8d69b0487000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c63e1c64c42b7f3b7fdc396d4756cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe0e99cd239e789a9df7b181e98a10b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787f2c8b1d9d1ef0cf740d2fd9b25a8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd2dc6d650e0885a1001c7a102b9c981.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dc191ebded559cc4e6752b9a4e2727c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c05a467ddaa138590b3b56615c2c42a5.png)
A.②③ | B.②④ | C.①③④ | D.②③④ |
您最近一年使用:0次
2 . 现有四个函数:①y=x|sinx|,②y=x2cosx,③y=x·ex;④
的图象(部分)如下,但顺序被打乱,则按照从左到右将图象对应的函数序号安排正确的一组是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/12/c01ed179-7bd4-46e8-9416-5e4f319582a8.png?resizew=119)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/12/fb8ce85a-0ebd-4035-8945-601923cf5c51.png?resizew=119)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/12/e78f6c5f-1ab4-499a-a671-5bd995faef04.png?resizew=119)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/12/2a9ee90e-511c-450a-8c07-aaa2c64c3683.png?resizew=119)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1305b9abebd7bef3171486df157286b3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/12/c01ed179-7bd4-46e8-9416-5e4f319582a8.png?resizew=119)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/12/fb8ce85a-0ebd-4035-8945-601923cf5c51.png?resizew=119)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/12/e78f6c5f-1ab4-499a-a671-5bd995faef04.png?resizew=119)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/12/2a9ee90e-511c-450a-8c07-aaa2c64c3683.png?resizew=119)
A.①②③④ | B.①③②④ | C.②①③④ | D.③②①④ |
您最近一年使用:0次
2021-02-03更新
|
963次组卷
|
5卷引用:四川省泸州市合江县中学校2022-2023学年高三上学期第三次月考数学理科试题
四川省泸州市合江县中学校2022-2023学年高三上学期第三次月考数学理科试题江苏省泰州市2020-2021学年高一上学期期末数学试题(已下线)2021年新高考浙江数学高考真题变式题6-10题(已下线)第04讲 三角函数的图象和性质(考点讲解+分层训练)-2021-2022学年高一数学考点专项训练(人教A版2019必修第一册)(已下线)第四章 三角函数与解三角形 第四节 第一课时 三角函数的图象与性质(一)(核心考点集训)
名校
解题方法
3 . 已知
是
上的偶函数,
,当
时,
,则函数
的零点个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35263c6f9845207fca5862101815e931.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f274f1247962a5b263183922fedfa086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b923078510697d5f7f9ea392eb76dd9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51da71a3293a7cba90e08c8ef41a5e6a.png)
A.12 | B.10 | C.6 | D.5 |
您最近一年使用:0次
2020-08-15更新
|
1194次组卷
|
7卷引用:四川省泸州市泸县第一中学2022-2023学年高一下学期期末数学试题