若函数
既有极大值也有极小值,则下列说法正确的个数为( )
①
②
③
④![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4944b18a1daae0480089124e5551107f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c87c18558044c253b0667e52bf6ce3.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e489645a4930d59e21720c0c44ac318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39d5f0d374837655cc286d326305da36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c735ed82c185231644ee33bba71af2b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4944b18a1daae0480089124e5551107f.png)
A.0 | B.1 |
C.2 | D.3 |
更新时间:2024-04-01 22:55:42
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