解题方法
1 . 已知常数
都是实数,
的导函数为
的解集为
,若
的极小值等于-105,则
的值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/856ee302446fe319f44351b089d5ba0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/220fc057b9c9b140f921910f9821a9cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7716b7668ee354695dc20e69704795d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2 . 下列命题中,正确的序号是________ .①存在
,使得
② 若
,则
③ “
”是“
”的充要条件④若函数
在
有极值
,则
或
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee21db6628e4db3f5831370549fa96b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b684222b196673f8e6ee9e73931b2e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d4de9cbec6024f5ee2dc3636de55030.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4396ab83803cb86dceb4f0dd72f05111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84c462ebeb0d4b1614f35933d5145026.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e280e3dc7c79c0cd2ce6da7ef36bc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e328c20ada7164298ca70ceb5d5194ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613ddc0b7a43d3f99a672632d7a13baf.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572658740379648/1572658746499072/STEM/6dbf9baa0fad440ea8857dea1532fe3f.png?resizew=71)
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