1 . 下列对应关系是从
到
的函数的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
A.![]() ![]() ![]() |
B.![]() ![]() ![]() |
C.![]() ![]() ![]() |
D.![]() ![]() ![]() |
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解题方法
2 . 下列说法中不正确的是______ (只需填写序号)
①设集合
,则
;
②若集合
,
,则
;
③在集合A到
的映射中,对于集合
中的任何一个元素
,在集合A中都有唯一的一个元素
与之对应;
④函数
的单调减区间是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d028846b8614318fbf90387d13c75b5.png)
⑤设集合
,
,若
,则
①设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cec1a82f40122b306b15aa29da2f8c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a88caacdbf71fca44d1ca412c68fa66.png)
②若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5361ed288fa23f3b5d16cbc09d3293d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f808f81b6ea9da53d51c549be04f4267.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a70d32c64918aa4d1d9d3ce0bdbf7b.png)
③在集合A到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77c9320d009a17deba67f208c7d8be8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d028846b8614318fbf90387d13c75b5.png)
⑤设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a569ad6f0b7c49d11d7e167bb0527ace.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faa7b8acbc8b0027cbe9e3986ad1d859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6455e38ff53ede2508e4d9cb23f0b86.png)
您最近一年使用:0次
3 . 已知
在映射f作用下的像是
,则
关于
的原像是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a79a33a83a7ba57a34b5093d1d1d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d2f7a55c8b3fd6bf65d9ea838e4ce8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5265d99095b635f62c7915298ec0e963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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名校
4 . 若集合
,
,则从
到
可以建立不同的映射个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41fef194908bc9c19e5bce0a38c99e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bfa72aa72494910364d6b0f1bcc6929.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
A.5 | B.6 | C.8 | D.9 |
您最近一年使用:0次
5 . 集合
下列表示从
到
的映射的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7037bc9f90dd0c76614ba1589f721222.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
6 . 给定的映射
→
(x,y∈R)的条件下,点
的原像是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/350411063c554ef8093742b87403929f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/959dd23563d551fc574f11003ec85ce1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342dc1cde5de669f068a9f5dc990b523.png)
A.![]() | B.![]() ![]() |
C.![]() | D.![]() ![]() |
您最近一年使用:0次
2021-10-22更新
|
121次组卷
|
2卷引用:陕西省西安市长安区第一中学2021-2022学年高一上学期10月月考数学试题
7 . 设集合
,
,从集合
到集合
的映射的对应关系
,若
的像是
,
的原像是
,求
、
、
、
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4ace488e5315f552e0a22d35cb9655a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8772b090c950e1b621a7610550726106.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/24fddd91e7aa0cae97116c69df85feb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b06e95b57b7a81cd81d05557a11fa92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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解题方法
8 . 给出下列四个关于函数的命题:
①
(
)与
(
)表示相同函数;
②
是既非奇函数也非偶函数;
③若
与
在区间
上均为递增函数,则
在区间
上亦为递增函数;
④设集合
,
,对应关系
,则能构成一个函数
,记作
,
.
其中,真命题为( )
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3daad3a31a3597f75fa109736ed2ebf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee738c779287f2b4926315c13c8f55b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5908d66f89c1843ed7317419252c3c3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ea91c3a9e5dba5b0ac06b0d8b4ffe37.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc160de8b63abf998c32da006cfb8316.png)
③若
![](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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/282bd8132e2d40176dec2cc77010856b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
④设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ac6abf1128cf26e636bc44598b18b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b89d7f114147ba514c8036209b808495.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d467230ea5b7f0333441554ed845036.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a662f934b3bf3ad6f1f1414fedb381d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69444f1e248a7c2cb12fa9adf891147a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
其中,真命题为( )
A.②③ | B.①④ | C.①③④ | D.②③④ |
您最近一年使用:0次
2021-08-25更新
|
248次组卷
|
4卷引用:安徽省六安市毛坦厂中学2021-2022学年高三上学期9月月考理科数学试题
安徽省六安市毛坦厂中学2021-2022学年高三上学期9月月考理科数学试题浙江省宁波市慈溪市2020-2021学年高二下学期期末数学试题(已下线)专题3.2 函数的基本性质-《讲亮点》2021-2022学年高一数学新教材同步配套讲练(人教A版2019必修第一册) 沪教版(2020) 25天高考冲刺 双新双基百分百22
9 . 在整个数学当中,一个首要的概念是函数.函数的定义是在数学家的不断研究而得到发展和完善的.德国著名数学家狄利克雷(1805--1859)给出一个数学史上著名的函数实例:
狄利克雷函数
具体而深刻地显示了函数是数集到数集的映射这个现代函数的观点( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e816dfc2d81996eba889f2df736bf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8238fba9b391d01ceb071e78ee221035.png)
A.函数![]() | B.函数![]() |
C.函数![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
名校
10 . 已知点
在映射
作用下的象是
,
,
,则点(5,1)的原象是________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b96922ebe790f30854a4b9459f841556.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a662f934b3bf3ad6f1f1414fedb381d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c77a522beb24be7c3dbbff09ec49fcf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54dad48527a47eab4a5916ab0421cc71.png)
您最近一年使用:0次