已知函数f(x)=lnx+![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
+ax(a∈R),g(x)=
+![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
.
(1)讨论f(x)的单调性;
(2)如果函数F(x)=f(x)-g(x)存在零点,求实数a的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad040ae0fab73f5dd7b1af48cd3b5f93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
(1)讨论f(x)的单调性;
(2)如果函数F(x)=f(x)-g(x)存在零点,求实数a的最小值.
2022·河南·模拟预测 查看更多[5]
河南省名校联盟2021-2022学年高三上学期1月联合考试数学(文科)试题(已下线)思想02 分类与整合思想(练)--第三篇 思想方法篇-《2022年高考数学二轮复习讲练测(浙江专用)》(已下线)思想02 分类与整合思想(练)--第三篇 思想方法篇-《2022年高考数学二轮复习讲练测(新高考·全国卷)》四川省成都市第七中学2021-2022学年高三下学期热身考试数学(理)试题(已下线)第5章 一元函数的导数及其应用(新文化与压轴30题专练)-2021-2022学年高二数学下学期考试满分全攻略(人教A版2019选修第二册+第三册)
更新时间:2022-03-01 13:45:24
|
相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】已知函数
.
(1)若
,求曲线
在点
处的切线方程;
(2)探究
时,
的零点个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e571405430d5f6be67c0d829a1386f88.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)探究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.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
|
较难
(0.4)
名校
【推荐2】已知
,
,其中常数
.
(1)若函数
有两个零点
,
(
),求实数a的范围;
(2)设
,在区间
内是否存在区间
,使函数
在区间
的值域也是
?请给出结论,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c35c7e4144f417a28adea4d80fb45bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6020c383cf135d83fcd84beb7da34d46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a404323df900f1d9ce67efbbff365b77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d41acc47493556617fe7b9e55093d10.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5effa81e85208bd459b37ec0b1b3372d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84a7a4a037a4dfe973f1eb683d93d799.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4307ed3bc7577d8cbdbdb21469958e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcafc95a0527841c29a58d4f7d85e232.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b85a97933a1d984f6e484b4021c800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b85a97933a1d984f6e484b4021c800.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐1】已知函数
.
(1)讨论
的单调性;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8e34e7f4324ba4b9179fd884ef561b.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcc9ec5a0d1f0ddad352975b0e7ef502.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐2】已知函数f(x)=(x﹣1)ex+ax2(a∈R).
(1)若a=e,求函数f(x)在点(1,f(1))处的切线方程;
(2)讨论函数f(x)的单调性.
(1)若a=e,求函数f(x)在点(1,f(1))处的切线方程;
(2)讨论函数f(x)的单调性.
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
解题方法
【推荐3】已知函数
.
(1)证明:当
时,
有唯一的极值点为
,并求
取最大值时
的值;
(2)当
时,讨论
极值点的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6082bf1807875c773bc866e08d3e6bf1.png)
(1)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef118cce5443a4d794561f5ef8e1fcc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7417645b760b0e03cfe0bcdaa6a1d93e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次