已知关于
的函数
,其导函数为
,且函数
在
处有极值
.
(1)求实数
、
的值;
(2)求函数
在
上的最大值和最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c98d558f5e6fea09d072f0c4769a690.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceec72ad249f0ef8750d12a473148688.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354c3a283b2b21cc8ac33995aac20a5c.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82eebb523692d3fbd2e490776616b503.png)
更新时间:2021-08-28 15:09:57
|
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知函数
,
.
(I)若
的极值为
,求
的值;
(Ⅱ)若
时,
恒成立,求
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea8ca63e688e0a54acd06e5943680c12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(I)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc6696ee99cc395a2b72d0bd7017c315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb2d4b7356c125576c89da68efeb9c26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】已知函数
.
(1)若函数
在
处取得极值,求
的值;
(2)若函数
的图象上存在两点关于原点对称,求
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec319e3d0eb29bde3cf721256f101dc0.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐3】设函数
.
(1)对于任意实数x,
恒成立,求m的最大值;
(2)若方程
有且仅有一个实根,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b159f1ae4e6c3da1873fddfa74a49dd3.png)
(1)对于任意实数x,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d24ae08f436e938531a95fd7a0258f2.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b92b70365c63607daecdc8deb73ecf.png)
您最近一年使用:0次
解答题-应用题
|
适中
(0.65)
解题方法
【推荐1】某企业为确定在2019年度投入某种产品的开发费用,需了解年开发费用
(单位:百万元)对年销售量
(单位:百万件)的影响,统计了近8年投入的年开发费用
与年销售量
(![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5f2634766a7356255d9426013f69bc5.png)
)的数据,得到如下散点图.根据散点图可得年开发费用
和年销售量
符合
(其中
为大于0的常数)的回归方程.
![](https://img.xkw.com/dksih/QBM/2022/3/24/2943260542443520/2947889931558912/STEM/df0e7e6171384a6c87f77c4b18cdde37.png?resizew=338)
(1)对数据作如下处理:
,两边取对数得
,令
,得到相关统计量的值如下表,求
关于
的回归方程;
(2)已知企业年利润
(单位:百万元)与
的关系为
(其中
)根据(1)的结果,要使得该企业2019年的年利润最大,预计2019年应投入多少开发费用?
附:对于一组数据
,
,
,
,其回归直线
的斜率和截距的最小二乘估计分别为
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97ea8f47d8d8d9e1832d52b1c7425450.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4de122ae929b1acaff321dec137622ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5f2634766a7356255d9426013f69bc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2134fc8169d224141b646cfcb70c4a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fea788ae8bd9c0cc3924d1d051d3363c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://img.xkw.com/dksih/QBM/2022/3/24/2943260542443520/2947889931558912/STEM/df0e7e6171384a6c87f77c4b18cdde37.png?resizew=338)
(1)对数据作如下处理:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e669003697300730a70f6fa2d2a035ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b41ac9a19a9260cd504784976200cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6363919698a207f13390fa7405c85cc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
24.40 | 12 | 12 | 37.20 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/145a1614b27db531b410a3bb1f427552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11204e2fb6e560bf7a4ca26eaebfc526.png)
附:对于一组数据
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cbf40ba2349bb461db69fca44994572.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5954e038f4244e7bf6b1e0d6d5554884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e5531913e2f170465d8df01795cd51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7235fc68789bd371e118433de5b0460.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0943f70585435955d528325e51ef013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6adf5e1e882ad52e11a95a0f671f20f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf2c6df1d1a621ca7cb7c4eaf7de5f65.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】已知实数
,且函数
的定义域为
.
(1)求
的导数
;
(2)当
时,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35e5a30ee58fa71f6c1f21102a40b95d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914b6ca2933416cce4a52757f4c69072.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a15bccf9756ec716bd5c04e2641b6441.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐3】已知函数
(
).
(1)求
在
上的最大值;
(2)若函数
恰有三个零点,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b159f1ae4e6c3da1873fddfa74a49dd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac9c64ba837387d640de4b8e2191b1b5.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次