名校
解题方法
1 . 已知函数
(
且
).
(1)若函数
在其定义域
内既有极大值也有极小值,其中
为
的导函数,求实数
的取值范围;
(2)当
时,函数
,其中
,若
,
为
的导函数,函数
的极小值点为
,试比较
,
的大小,并加以证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4db012cdcf323709778a7b2e317be0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34d77f276606873be59ec132dbe9878e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e64ba8593537d13752713ecc882cd5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a15bccf9756ec716bd5c04e2641b6441.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ffecb03c47be920254c4ccffa5b222.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d19d2c73835394d969fe770e7669f954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ebb47822bbdb5db7d3b803ea4344a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba762c563a93c8186ac14e4a996d278a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9d22bb946774b45d4671e5eabe3b47f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e03ad0c315806342d6cd732a0b91a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9d22bb946774b45d4671e5eabe3b47f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
您最近一年使用:0次
解题方法
2 . 已知函数
,其中
.求证:
(1)
,且
;
(2)
,
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4d6363133c710c00b99fafa01dce16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1948bdb9bfc6493bc0e596d9a0dab5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/accad8245514b083d7434160085188fd.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b9f295a43c5d78cf9518456fef0abda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32474ff2d16bb427dc7426e481b20709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2479b7fa52eafe0e011435864bfe9c37.png)
您最近一年使用:0次
名校
3 . (1)求证:
;
(2)已知
,求
的根的个数;
(3)求证:若
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22bf4f41cf8859c51efa2778ea714fc.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87467293f890d595d36e67ab829ca482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/502c4ff1cd420b9da4de849e63c307e9.png)
(3)求证:若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd51a49264c990240a3abba25584e4a8.png)
您最近一年使用:0次
2021-04-24更新
|
907次组卷
|
7卷引用:辽宁省“决胜新高考·名校交流“2021届高三3月联考数学试题
辽宁省“决胜新高考·名校交流“2021届高三3月联考数学试题八省名校2021届高三新高考冲刺大联考数学试题(已下线)第五章 一元函数的导数及其应用单元测试(巅峰版)-【新教材优创】突破满分数学之2020-2021学年高二数学课时训练(人教A版2019选择性必修第二册)重庆市杨家坪中学2020-2021学年高二下学期6月月考数学试题(已下线)专题2.16 导数-不等式的证明-2021年高考数学解答题挑战满分专项训练(新高考地区专用)(已下线)第四章 导数专练11—构造函数证明不等式(1)-2022届高三数学一轮复习新疆维吾尔自治区乌鲁木齐市第101中学2024届高三上学期8月月考数学(理)试题
名校
解题方法
4 . 已知函数
,
为
的导函数.
(1)证明:当
时,函数
在区间
内存在唯一的极值点
,且
;
(2)若
在
上单调递减,求实数
的取值范围.
(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81894c7f92af1cac020a4172c8911287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fefd1d1687c2274b0544028573413d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46fac8237d2038f0758be704b2ef4087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d126b5824164e145c4764ad0b79396a8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a3cee5e50ee4f1dfbcf0ff0312fef1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b44db6e470168bf9ebed4494ccc593e5.png)
您最近一年使用:0次
5 . 已知函数
,
(
为自然对数的底数),
.
(Ⅰ)若
,求函数
的单调区间;
(Ⅱ)若
恒成立,求实数
的值;
(Ⅲ)若直线
是曲线
的一条切线.求证:对任意实数
,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad406e22502cf97b27d51bb87258622c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ec6ad1c734902409ff399e95525388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa662f0273f0921c1fa4727f632395.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be812216ebb70fdf53eb519d22a6690.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a36ede780090698d1dcb4b136a90193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(Ⅲ)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad406e22502cf97b27d51bb87258622c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f63d0559956db2f2519dd0b23112b4.png)
您最近一年使用:0次
2021-05-12更新
|
887次组卷
|
2卷引用:天津市南开区2021届高三下学期二模数学试题
名校
解题方法
6 . 已知函数
.
(1)
,求函数
的最大值;
(2)若
恒成立,求
的取值集合;
(3)令
,过点
作曲线
的两条切线,若两切点横坐标互为倒数,求证点
一定在第一象限内.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c013a7b9d9eba700eb2c7dca0e9e2b2.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4e6eed28e95d743071cf09483bc573c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e89249f9a184300e0e278b194cf51a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4133958c09fdd82cda8838c9cf46ccda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2021-05-06更新
|
1226次组卷
|
4卷引用:河北省保定市2021届高三一模数学试题
20-21高二·全国·单元测试
7 . 已知函数
.
(1)如果
是关于
的不等式
的解,求实数a的取值范围;
(2)判断
在
和
的单调性,并说明理由;
(3)证明:函数f(x)存在零点
,使得
成立的充要条件是a
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82c0c2942f26d4ae20dd6a672982e48a.png)
(1)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbf9c380edc9b8ad928662eeab23c86c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6acb0f1ac694dd177e99fc385f23318.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a314ec625b35a59cb6a4bef73d119f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ca753ecb0bdb359df408d9058b798.png)
(3)证明:函数f(x)存在零点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71c30572af5d28991fedd6692a13dc0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87463b57e1830c6a71e602f261cc6d3.png)
您最近一年使用:0次