已知函数
在
处取得极值,其中
为常数.
(1)若
,求函数
的单调区间;
(2)若
,且函数有
两个不相等的零点
,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd8deef2cc0e01b28304ebccf7fd69c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ca13a93b5f401c0d39ba52b0cffcb0.png)
更新时间:2023-02-05 13:53:40
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(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07a4bb7f5e102cda82e1a7ed31e70c22.png)
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(3)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07a4bb7f5e102cda82e1a7ed31e70c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa31d253f74945e241f43ad3effc3fb.png)
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解题方法
【推荐2】已知函数
,
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(1)若
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.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/395e500432589ef824c36fddc95b28bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd5cdde751120c6deab563a6f7f8cf05.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1fe2115d883d13561e28006d3f6143b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b959cac4217df37652e05700018083d1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cd7f2b9ce1fdc643affd7478120cef3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9767d24f386671855d3d25d09801f2a5.png)
(1)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
(2)对任意
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1769979066fc6d2f30cd42251070e19c.png)
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(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b56fb7b666a2e912656fb31d7df7ec4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef161dba854f0fd68b747fa3650fdd36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b37b0682cd28144446c5d1c52fb507e.png)
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