已知函数
,其中
.
(1)若
在
上存在极值点,求a的取值范围;
(2)设
,
,若
存在最大值,记为
,则当
时,
是否存在最大值?若存在,求出其最大值;若不存在,请说明理由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e1eed336c6d28dd64423b486041cbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0b5e402f725a71c3305bf3e72f72ded.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2251dc81292a17b6e6bf8a4beefd06af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/810a0d1eed4af12f835d6a8f2e1651df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0083ec7ec1e80158acaeed1ff18d409b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760f804646698060703c5458ff5637c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcff438bffcf9f37716d665e80bb0a4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760f804646698060703c5458ff5637c7.png)
17-18高二下·天津静海·阶段练习 查看更多[4]
天津市静海县第一中学2017-2018学年高二6月学生学业能力调研数学试题内蒙古通辽市开鲁县第一中学2020-2021学年高三上学期第一次月考数学(理)试题(已下线)练习12+导数及其应用(2)-2020-2021学年【补习教材·寒假作业】高二数学(文)(北师大版)(已下线)练习12+导数及其应用(2)-2020-2021学年【补习教材·寒假作业】高二数学(理)(北师大版)
更新时间:2020-03-25 13:21:35
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解题方法
【推荐1】已知函数
在其定义域内有两个不同的极值点.
(1)求
的取值范围;
(2)试比较
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(3)设
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cca9508169f3a9ded9a6a7be2ec4be49.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)试比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48fda4284fb28f4e98554b32df14b590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbfb45a46a2ebba2a9db634ad5942608.png)
(3)设
![](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/d3661dbd3b2c578c685e6a11a4102ddd.png)
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(0.4)
【推荐2】已知函数
,
,(
)
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在
处的切线方程;
(2)如果关于
的方程
在区间
上有两个不等实根,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb3b6c56aee4bb8a8131fd960415c745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb0c6c9874431c8e9a1b553873428aef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
(2)如果关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2af05932a81cd32d7fc2259822668b31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45b5b1d9f8a6f957302b8cbc0ae4ecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐1】函数
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处有极大值和极小值,且
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d1a68ceead706e8195eb9c6fb67cbc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b87672c802aabcf58a8529c278638e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb7c042ea89f54fc7bffb067fae29f50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae5a64bcb77f5f64e4af6930c249a270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f00c53ceecdc44d9eb2d0405bf28ec1c.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90918b116ddc7dd7115ece5520dbd006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/321d09c6e1ab2d66781ac1066c3516bd.png)
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(0.4)
解题方法
【推荐2】已知函数
.
(1)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e29d1c3b1be4d3ebcd64735e88a2909a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
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