已知函数
.
(1)当
时,求
的极值;
(2)讨论
时函数
的单调性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f3da163dfbc4bc01de9bb6706c2cd3a.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
更新时间:2021-11-24 08:34:58
|
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解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】已知函数
.
(1)求函数
的极值;
(2)是否存在实数
,使得函数
在区间
上的最小值为
?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b87ddae11c4ba01e12bcaf3419a22e2f.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579e2c39e6c0a640357e3b0ccd6f954a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3479460a009e8b4c07a30ca129c686c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】已知函数
是
上的奇函数,当
时
取得极值
.
(1)求
的单调区间和极大值;
(2)证明对任意
,
,不等式
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03679d7dfb06bc2144bb16a702f4c5e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)证明对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fe353cacfe638a9938c19d48f16067.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/475e9df64881c182b77bbd8ccee396f3.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐1】已知函数
,讨论
的单调性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e5f51699ef4881987b85d3eba1e3c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐2】设函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7acc198e0c40a303e61fce3133ec04e.png)
(1)当
时,求
的单调区间;
(2)任意正实数
,当
时,试判断
与
的大小关系并证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7acc198e0c40a303e61fce3133ec04e.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)任意正实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/419504736c4934f6e0df4114c3743944.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bfc8f775c0c874c4ea920136a91db8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db796087007913b350ce60b654a25115.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐3】已知函数
(
…是自然对数的底数) .
(1)求
的单调区间;
(2)求函数
的零点的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e76ced8735e7f2084c7967ceb4490a27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9405dfcca25b76af059fb4c308983eae.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
您最近一年使用:0次