1 . 已知函数
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1237b4a84b185009c0af4134d3b99f93.png)
A.函数![]() ![]() | B.函数![]() ![]() |
C.函数![]() ![]() | D.函数![]() |
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解题方法
2 . 已知函数
的定义域为
,部分对应值如下表,
的导函数
的图象如图所示.则函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc9c82c1ec9a0ff6eec86178962285f5.png)
的零点个数不可能为( )个.
![](https://img.xkw.com/dksih/QBM/2022/4/8/2953508246863872/2953921324122112/STEM/64b0ffeac2ee4b808da0d874f43ff7f2.png?resizew=188)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bac8e7626601190d9bb50959b3046320.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d0c99ddd028f0bc3b1d64924ff0f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc9c82c1ec9a0ff6eec86178962285f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2081e1fea357350894f8aceed56e439a.png)
![](https://img.xkw.com/dksih/QBM/2022/4/8/2953508246863872/2953921324122112/STEM/64b0ffeac2ee4b808da0d874f43ff7f2.png?resizew=188)
x | -1 | 0 | 4 | 5 |
1 | 2 | 2 | 1 |
A.2 | B.3 | C.4 | D.5 |
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解题方法
3 . 若函数
满足
,且
时,
,已知函数
,则函数
在区间
内的零点的个数为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829214aa98f691faf08ffe4b645f9099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17a3556b7e9458ec54d4cf1de17a5649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1591d4244dcf5539a4ae98f554e91e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ff65953311c700ffe160fb0d8a1afc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5767bcefca0803c099ae91d69ee5fa33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa662f0273f0921c1fa4727f632395.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71dbce0ccda0f5df7d0555fa23bf770.png)
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