解题方法
1 . 已知函数
在
处有极值为
,则
的值等于_________ .
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959682048/STEM/8b62daac43ef45d5a61b063b8b6873bf.png?resizew=164)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959682048/STEM/94542c27cbcb4ea7a444a5966ca3eae7.png?resizew=35)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959682048/STEM/6ced1c284ac04846933ca22ead3f852a.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2017/2/8/1625057959280640/1625057959682048/STEM/d433a340b8a94aa5800cec77fe1611b9.png?resizew=36)
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解题方法
2 . 已知函数f(x)=
x3-
x2+cx+d既存在极大值又存在极小值,则c的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
您最近一年使用:0次