已知函数
,
.
(1)求函数
的导函数在
上的单调性;
(2)证明:
,有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d97742d82d0135a449d8714f9ab5260c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed6e47b9ca46b55fd07cba7af3d62ec.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89eea593c79973e97f6f3cdf621cdfc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/737c547ec827a640284b13e199d949f3.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02dd24e79072cb742ee54ccd0c7773f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/207ece9b3f3d83181e91b16c67be3526.png)
更新时间:2023-05-04 17:41:31
|
相似题推荐
解答题-证明题
|
适中
(0.65)
名校
【推荐1】已知函数
.
(1)若曲线
在
处的切线过点
.
① 求实数
的值;
② 设函数
,当
时,试比较
与
的大小;
(2)若函数
有两个极值点
,
求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8505dde2e280a92a6f80a1f121ef1d91.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7028a5fa4d781d382ca3b73b74796e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679353e656a54993c041ebd39ec7b31b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1adc3ab879d8fed117aba62fad4532b9.png)
① 求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
② 设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ad94ebc8d7156f3094c438f7e50c6db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa80f7ae0dc2d3dfba3628fc01467a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdc4e29b3093ad97ff6652b7c7e490c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed548fb21a91431c4ead7cf3dde43a37.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/040135d64192de075ba0cc9f11ddbc9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7669fe02b296fe717ed7cedfcb32a8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2c31285e297fa5181ff8c1fdd0d9d5.png)
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解答题-问答题
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适中
(0.65)
【推荐2】设函数
,其中
.
(1)若
,求曲线
在点
处的切线方程;
(2)求
的单调区间;
(3)若
的图象与
轴没有公共点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/844267775d7af7501a20376ca3a0c2ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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
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适中
(0.65)
名校
【推荐3】设函数
,
.
(1)当
时,判断函数
的单调性;
(2)当
时,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07867e91f38e1c1df63ef47380078bf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc4136bd17997e11a7f8abcb19f9018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e11755ed0a988c3ef721649fa598f3b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
解题方法
【推荐1】(1)已知
,求证:
;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e50fdf919e648c0ddb6290c17e26e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892f3c1a1c932881193cfce6d7ab1f54.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec72ca557aa4229ee871628ffcf0d8a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c951f1fb89c19aab201e29985b481ab.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】定义
表示
,
中的较小者,已知函数
,
的图象与
轴围成的图形的内接矩形
中(如图所示),顶点
(点
位于点
左侧)的横坐标为
,记
为矩形
的面积,
(1)求函数
的单调区间,并写出
的解析式;
(2)(i)证明:不等式
;
(ii)证明:
存在极大值点
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6323f3d42a8c329f1231a4183cca21c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78d1486ddf48f880513be9fa4249412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134c3d2c318a33a82da4134dd17fa57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134c3d2c318a33a82da4134dd17fa57e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/18/719f6c9a-a749-4a1b-b35e-8f1fed85dc16.png?resizew=161)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)(i)证明:不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e54d70f6c27632ac2d0b47ebfc97e66.png)
(ii)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7889b87f8c7ec1d78ce196af44bb9844.png)
您最近一年使用:0次