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解题方法
1 . 已知函数
(
且
).给出下列四个结论:
①存在实数a,使得
有最小值;
②对任意实数a(
且
),
都不是R上的减函数;
③存在实数a,使得
的值域为R;
④若
,则存在
,使得
.
其中所有正确结论的序号是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/024d180c8444916a09628e505b140444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae018fde08edf0539089f98c17e11ff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd594e99f82b7736c44e18b2721e607f.png)
①存在实数a,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6bfdb24ecf5da863405c2b40936ff9.png)
②对任意实数a(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae018fde08edf0539089f98c17e11ff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd594e99f82b7736c44e18b2721e607f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6bfdb24ecf5da863405c2b40936ff9.png)
③存在实数a,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6bfdb24ecf5da863405c2b40936ff9.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ade541026b00bbec26f5d0f3e22a30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a389865f51463042b3e2a4c50eb29ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/511cff76b961072e42c12db9b976c14d.png)
其中所有正确结论的序号是
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2022-01-14更新
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1655次组卷
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4卷引用:中国人民大学附属中学2022届高三下学期数学统一练习(1)试题