已知函数
.
(1)求曲线
在点
处的切线方程;
(2)证明:
存在唯一极大值点
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b879ffedf529bd008db02045d14db8.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4cfb2d80ec27db79ffad4b4b9f5994c.png)
21-22高三下·重庆渝中·阶段练习 查看更多[3]
更新时间:2022-05-22 12:48:24
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解答题-问答题
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较难
(0.4)
【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9e7c9b3bebc62e7a586737a65d34a10.png)
(1)若
,试求
在
点处的切线方程;
(2)当
时,试求函数
的单调增区间;
(3)若在定义域上恒有
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9e7c9b3bebc62e7a586737a65d34a10.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6bfdb24ecf5da863405c2b40936ff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba2a58630f46433f1823d9d40a697277.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae018fde08edf0539089f98c17e11ff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6bfdb24ecf5da863405c2b40936ff9.png)
(3)若在定义域上恒有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3844f9309518f584b379e884a16a1ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
【推荐2】已知函数
.
(1)当
时,求
在点
处的切线方程;
(2)对于在
中的任意一个常数
,是否存在正数
,使得
,请说明理由;
(3)设
是
的极小值点,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd12e89e443c19d4bbdd68b2a4f1c6b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)对于在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa63a6de2503234154892a2ba4753e0c.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dd6c70726cd78abec3a1910ab1c82d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d00fa30237fda288900675c297256662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1753943200cfc570c7c07aa8f61ad4b1.png)
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解答题-问答题
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较难
(0.4)
【推荐3】设函数
,其中
.
(1)
时,求曲线
在点
处的切线方程;
(2)讨论函数
极值点的个数,并说明理由;
(3)若
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/955fd618899563c32b4e63f9c10c0a53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c887da0c850acf41ab249cc262ae39.png)
(2)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c56c30af0ffdb521224345695a9d1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
【推荐1】已知函数
.
(1)若函数
与x轴相切,求m的值;
(2)若函数
恰好有两个零点
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0900714f0054d5fdd4b8b7a83434b145.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27903a554ef930c90f6d68166552bac4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16c560dc281c9c82a72fa4778e62a5ae.png)
您最近一年使用:0次
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(0.4)
解题方法
【推荐2】已知函数
,
为常数).
(1)若方程
在区间
上有解,求实数
的取值范围;
(2)当
时,证明不等式
在
,
上恒成立;
(3)证明
,
.(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0515998cdb1cd4b8cb11972b5bbe6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8447e8f186b4ed69301d77efc0827ce9.png)
(1)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4388fda43131ee01d2e97ce4754afa55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/245cfb2581e2aa1ee9ddbf6f3de5747f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302337058242c7b78e3eb4ac7210b7ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564c56d086bda3e2ab12473194570bff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ac260d00e914288e1f036f1b647ddf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85569490f9cd7a6088279596944a099d.png)
(3)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/541fe86667e19b0b3bdb4c7e6e0dc3de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa150a07199279550038067fb295d59f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6a203b15848f4b52f967b2d08b69817.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐1】已知函数
.
(1)当
时,求函数
的极值点﹔
(2)若
,讨论函数
在
上的零点个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f816942777d1f0bab7b12ba88a03a72b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e552ecd182723aa687aaebd5f8843e83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7dcdd87d593df4a5c5e98d47fe1cfa6.png)
您最近一年使用:0次
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较难
(0.4)
名校
【推荐2】已知函数
.
(1)当
时,求
零点的个数;
(2)当
时,求
极值点的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d99ebc3e7f852dc8e1a0194325e4f9.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/517daac9aa260866798457d3018c64bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37440b57fe2ffc13f2a873e38f55d29b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
您最近一年使用:0次
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(0.4)
名校
【推荐3】已知关于
的函数
,函数
.
(1)直接写出函数
的零点.
(2)求函数
的单调区间和极值点.
(3)若函数
没有零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11400a85adf5a94465ede5ab4aa70aee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90bbd08c5f8175e756547713faeb0e6.png)
(1)直接写出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90bbd08c5f8175e756547713faeb0e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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