解题方法
1 . 下列有关导数的运算正确的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
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名校
2 . 给出下列四个结论:
①命题“
,
”的否定是“
,
”
②“若
,则
”的逆命题为真;
③函数
)有3个零点;
④对于任意实数x,有
,
,且
时,
,
,则
时,
.
其中正确结论的序号是________ (填上所有正确结论的序号)
①命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8645952ea14b25443f411d39bdec641e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e4848e12d90125411fb07a7e524de6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c71d0b9899908b4f991a7913b3ebb674.png)
②“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91bcddc2ece6bcde9355e222e1cf9f56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c99deafa217583045293af145d310e93.png)
④对于任意实数x,有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd1db6c94b94afc372212a81cc1f4dd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9b72010ae96e1604903157ed1406ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c72d250a079379c5175693c165248c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f50105196badff2f03221b01a6d539f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e541ea2f855f981c96207070683d388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fd6806b47e65fa3f647d38ecff67ba3.png)
其中正确结论的序号是
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