1 . 若函数
的定义域为
,则函数
的定义域为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5d7f58f3feaf8d34acf8b4ad7c7c8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7e85b0a1aeb33ed2aab8f2f5ac08ec.png)
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2023-11-01更新
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645次组卷
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3卷引用:专题04 函数的概念及表示(2)-【寒假自学课】(苏教版2019)
(已下线)专题04 函数的概念及表示(2)-【寒假自学课】(苏教版2019)广东省惠州市惠阳区第一中学高中部2023-2024学年高一上学期第一次月考数学试题吉林省延边朝鲜族自治州延边第二中学2023-2024学年高一上学期第一次阶段检测数学试卷
20-21高一下·江苏南通·开学考试
2 . 给出下列命题:
①若函数
的定义域为
,则函数
的定义域为
;
②函数
在定义域内单调递增;
③若定义在
上的函数
满足
,则
是以2为周期的函数;
④设常数
,函数
若方程
有三个不相等的实数根
,
,
,且
,则
的值域为
.
其中正确命题的序号为_____ .
①若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1924f683f9c883587b48ccddd8f00f99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82dee78784d1b1841d8ed52c47a8163.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0fa5d8301f4b34a10f98b5929667357.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/457eb5e0000350b102d387a80cf3476b.png)
③若定义在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4e13b0ca1f02740b1d1b41e469b966e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
④设常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02cf2238baf71c8a83e056c3a315e985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c342d52fc26cc550a45b80756903bee6.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/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f097865549154b7196a695ce297b29a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec11fcbacb03a3a801e524952e67b308.png)
其中正确命题的序号为
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解题方法
3 . 下列命题中所有正确的序号是__________ .
①函数
(
)在R上是增函数;
②函数
的定义域是
,则函数
的定义域为
;
③已知
,且
,则
;
④
为奇函数.
⑤函数
值域为
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df925fef841580d225b6ee58164581a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ed2dd8a797d6da9c89e858aed9a7da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ce2f5e22175e3ff8ab5e0afca58f9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3247f03357462fec934f37c65ebdc77e.png)
③已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4db7e6c6a243f9c95ca5403ede3a96b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d39cf8f646727f972505c01ec877dce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eb72b4c134ef1672b330453ca780270.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dbe13ade9520fcc649191e2c453ed71.png)
⑤函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aeeecc7c5826f14b66086ad0c58974e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0fa5d8301f4b34a10f98b5929667357.png)
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