名校
1 . 已知函数
,记
的导函数为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(1)讨论
的单调性;
(2)若
有三个不同的极值点
,其中![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
①求
的取值范围;
②证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ee01931efa32998958d884b09da5e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
②证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2aea84dd4425b2dc3420a1babc875df.png)
您最近一年使用:0次
2022-05-23更新
|
1422次组卷
|
5卷引用:天津市南开中学2022届高三下学期居家5月模拟数学试题
天津市南开中学2022届高三下学期居家5月模拟数学试题天津市南开区2022届高三下学期三模数学试题(已下线)2022年全国新高考II卷数学试题变式题13-16题(已下线)2022年全国新高考II卷数学试题变式题20-22题吉林省白城市通榆县第一中学校2023-2024学年高三上学期期中数学试题
名校
解题方法
2 . 已知函数
.
(1)当
时,求曲线
在
处的切线方程;
(2)设函数
,若
在其定义域内恒成立,求实数
的最小值;
(3)若关于
的方程
恰有两个相异的实根
,求实数
的取值范围,并证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3c1e888fee64604444c45c1e898576e.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/786d68c14cda1112feca467801ad35a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a2c01ac2a7f6ad7e03cb7a61daefab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd18a3b1cd5d1f78bc787438c9cd9ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a3ad8c843c361565d0f3cb06da49f60.png)
您最近一年使用:0次
名校
解题方法
3 . 已知
为自然对数的底
.
(1)讨论函数
的单调性;
(2)若
对
恒成立,求实数
的取值范围;
(3)若函数
有两个不同零点
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f38d9c7301605f399ca7a498cbd78a1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fddf3935e760275103f57dcfade566a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.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/03ca13a93b5f401c0d39ba52b0cffcb0.png)
您最近一年使用:0次
2022-01-16更新
|
1898次组卷
|
5卷引用:天津市南开中学2021-2022学年高三上学期第四次阶段检测数学试题
天津市南开中学2021-2022学年高三上学期第四次阶段检测数学试题(已下线)专题15 第一篇 热点、难点突破(测试卷)--第一篇 热点、难点突破篇-《2022年高考数学二轮复习讲练测(浙江专用)》广东省信宜市第二中学2022届高三下学期开学热身数学试题(已下线)2022年全国新高考II卷数学试题变式题13-16题(已下线)2022年全国新高考II卷数学试题变式题20-22题
名校
解题方法
4 . 已知函数
.
(1)若
的最小值为
,求
的值;
(2)证明:当
时,
有两个不同的零点
,
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8c207efd83d75c1f69237d97616c726.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7db8f867196410e2828e2bbd3183b02d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.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/25c534f574156e120f4a8d9ebef47ede.png)
您最近一年使用:0次
2022-07-07更新
|
1273次组卷
|
8卷引用:天津市武清区杨村第一中学2022-2023学年高三上学期第一次月考数学试题
名校
5 . 已知函数
为自然对数的底数
(1)求
在
处的切线方程;
(2)当
时,
,求实数
的最大值;
(3)证明:当
时,
在
处取极小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0a4b8f40d0a47d9c122bb4b511636e2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0906827be3e90e9995cddf323f21b30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6aa5ec6172d70ab693efd6987d92301.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
您最近一年使用:0次
2022-02-02更新
|
1676次组卷
|
4卷引用:天津市十二区县重点学校2022届高三下学期一模考前模拟数学试题
名校
6 . 已知函数
,
.
(1)当
时,求
在点
处的切线方程;
(2)当
时,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/1cb774dd6ec33f3c9b128f115a0adc5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5748815abeefc5a0be68c30427d18bd6.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1242ec96ac54e2fd418988d5190a88.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/92dc2f7a42189e920a199e513c3608ea.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bca4be345087f993a4078e16c16608e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d00fa30237fda288900675c297256662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1753943200cfc570c7c07aa8f61ad4b1.png)
您最近一年使用:0次
2022-06-01更新
|
1231次组卷
|
2卷引用:天津市武清区杨村第一中学2022届高三下学期高考第一次热身练数学试题
名校
7 . 已知函数
.
(1)当
时,求曲线
在点
处的切线方程;
(2)若函数
存在两个零点,求实数
的范围;
(3)当函数
有两个零点
,且存在极值点
,证明:
①
;
②
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1992673f2428acad25b02245ce76d589.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)当函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f8287240f6a389ee21b2c5794e467d.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee921306ededf437ac96f67d0fa7a4e.png)
您最近一年使用:0次
名校
8 . 已知函数
在点
处的切线方程为
.
(1)求
,
;
(2)函数
图象与
轴的交点为
(
异于点
),且在点
处的切线方程为
,函数
,
,求
的最小值;
(3)关于
的方程
有两个实数根
,
,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249f48203247c3d2e16ed9c050d6d810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f132e19302cb8f3c88d74e166ccac25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4bea6ee524be1344018e1d2cfc70125.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71ed26c227174a60f314a7946e9d7f18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2887bc3f1f3ddf749732e821e3b88467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aedc1c8a16e306bcd6e5154f9ed6dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02f196f6236188084f3b2c9f2b68c05c.png)
(3)关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e3397839f4b65912c2f0cfe7f05eef.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/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3227195fb778b9c913de91eb9127440.png)
您最近一年使用:0次
9 . 已知函数
,其中
为常数,
.
(1)求
单调区间;
(2)若
且对任意
,都有
,证明:方程
有且只有两个实根.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/082ece762ffbf92921f4685d45f5166d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71e7581a9b1bdf7e15be780aaaecc4a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12b76be0cb464b2a141d76963e5295a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/033f2c2bee683bec51fd69e2640ca5a0.png)
您最近一年使用:0次
2022-02-27更新
|
1178次组卷
|
8卷引用:天津市红桥区2021-2022学年高二上学期期末数学试题
天津市红桥区2021-2022学年高二上学期期末数学试题重庆市第十一中学2021-2022学年高二下学期质量抽测(二)数学试题重庆市天星桥中学2021-2022学年高二下学期第一次月考数学试题广东省深圳市南山区华侨城中学2021-2022学年高二下学期3月月考数学试题(已下线)专题09 利用导数解决零点问题-2022届高考数学一模试题分类汇编(新高考卷)天津市第九中学2022-2023学年高三上学期期末数学试题(已下线)专题07 导数的综合问题(2)(已下线)第三章 重点专攻三 函数零点问题(讲)
2022高三·全国·专题练习
名校
解题方法
10 . 已知函数f(x)=lnx﹣ax2﹣bx.
(1)当a=0时,f(x)有最大值﹣1,
(ⅰ)求实数b的值;
(ⅱ)证明:当x>1时,2lnx<(x﹣1)ex;
(2)a
时,f(x)存在两个极值点x1,x2(x2>x1)且f(x2)﹣f(x1)的取值范围是
,求b的取值范围.
(1)当a=0时,f(x)有最大值﹣1,
(ⅰ)求实数b的值;
(ⅱ)证明:当x>1时,2lnx<(x﹣1)ex;
(2)a
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a162dc68b1f6889351e5727b6d2d014e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb2c85531c49380d73f6b0f0d751d575.png)
您最近一年使用:0次
2021-09-29更新
|
1445次组卷
|
4卷引用:天津市外国语大学附属外国语学校2021-2022学年高二下学期期中数学试题
天津市外国语大学附属外国语学校2021-2022学年高二下学期期中数学试题(已下线)专题3.5 利用导数研究函数的极值、最值-重难点题型精讲-2022年高考数学一轮复习举一反三系列(新高考地区专用)(已下线)第11讲 双变量不等式:极值和差商积问题-突破2022年新高考数学导数压轴解答题精选精练天津市武清区杨村一中2020-2021学年高二下学期期末数学试题