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1 . 下列说法中正确的有( )
A.![]() |
B.已知![]() ![]() ![]() ![]() ![]() |
C.将函数![]() ![]() ![]() |
D.函数![]() ![]() |
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22-23高一上·河北石家庄·阶段练习
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2 . 已知函数
,满足对
恒成立的
的最小值为
,且对任意x均有
恒成立.则下列结论正确的有___________ .
①函数
的图像关于点
对称:
②函数
在区间
上单调递减;
③函数
在
上的值域为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e081aaeacc1cf15f9b62502498ddb05c.png)
④
表达式可改写为
:
⑤若x1,x2为函数
的两个零点,则
为
的整数倍.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afdbef79012f0292fac1a6d60b32f8f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f95d9e2a5423e990a9dd385f7a70d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6abf3f9b0ebcdc47a028c781b7edb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49f8a63ddbca52039fa9ab44cda6b29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93712fd025009bacda51a55bc713a2b4.png)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b2b096238bd6eac8cd1ab2c4348fb9.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f57567e757ab2bd2c967cc6a4fbb4b5.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d0c99ddd028f0bc3b1d64924ff0f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d01dc2d99655cf7598837cb0886166ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e081aaeacc1cf15f9b62502498ddb05c.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b58160bdb49eba77065b45f9d49e2b3b.png)
⑤若x1,x2为函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6abf3f9b0ebcdc47a028c781b7edb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49f8a63ddbca52039fa9ab44cda6b29.png)
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