解题方法
1 . 有下列四个命题:
①函数
的图像一定过定点
;
②已知
,且
,则
;
③ 函数
的定义域是
,则函数
的定义域为
;
④已知
且
,则实数
.
其中正确命题的序号是__________ .(写出所有正确命题的序号)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3587619d437626c2a3ba3ca1f43a4630.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b337c32bd5408c0ed8a9ee9cde4cad.png)
②已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b4c4159c58b1eb8fbad788a93a5318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d39cf8f646727f972505c01ec877dce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b67f9ad7b64e78a510f7b4ff90eac0c0.png)
③ 函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ed2dd8a797d6da9c89e858aed9a7da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/094338e30b3ff4d0ad4fb8b6452f79a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d196cbf277bcab31166431e5dbe9d1.png)
④已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6f4604a6f44318746bfcb26d6063e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/650e1fbe70fe158d525e096ba2bef858.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d80ff2c8a832aa8d73ad10d76033902c.png)
其中正确命题的序号是
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2021-02-07更新
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179次组卷
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2卷引用:贵州省黔西南州同源中学2020-2021学年高二下学期期末数学(理)试题