已知函数
.
(1)当
时,函数
单调递增,求
的取值范围;
(2)若
为
的极值点,且
,求正数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e4a64df2cf251e5b6071387fc93df7.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11abb76da45ffa52b47c3a6b9a03ac7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/234525312b1c1eae82eca072e0f33efd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2021-07-20 08:01:54
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【推荐1】已知函数
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【推荐2】已知函数![](https://img.xkw.com/dksih/QBM/2013/4/1/1571170555854848/1571170561490944/STEM/a6537f12889444679c58e7455a6161ea.png)
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![](https://img.xkw.com/dksih/QBM/2013/4/1/1571170555854848/1571170561490944/STEM/bf5df4bd3c84442ba613ebd8b4ecf06b.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c01460f387be1622ebe313548c8ccc9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0573a6bcc480a91a43126d01bc19eeae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba43e9a3405a50fa0aa738ae86bdeffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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