解题方法
1 . 已知函数
,当
,
恒成立,则
的最大值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65811a03998652dfe571759732117a9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6acb0f1ac694dd177e99fc385f23318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c6ce02259a85ea191541f4a708738f1.png)
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2021-08-15更新
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1724次组卷
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5卷引用:浙江省湖州市三贤联盟2020-2021学年高二下学期期中联考数学试题
浙江省湖州市三贤联盟2020-2021学年高二下学期期中联考数学试题(已下线)第5章《导数及其应用》 培优测试卷(二)-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册) (已下线)第07讲 利用导数研究双变量问题(讲+练)-2023年高考数学一轮复习讲练测(新教材新高考)2023版 湘教版(2019) 选修第二册 过关斩将 第1章 专题强化练3 利用导数研究恒成立问题(已下线)专题3-4 压轴小题导数技巧:多元变量(多参) - 1
2 . 已知函数
,
,
.
(1)若对任意
,不等式
恒成立,求
的取值范围;
(2)若函数
有3个不同的零点
,
,
.
(ⅰ)求证:
;
(ii)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f3f81612e1cc04fa4872cb93ac399be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54240f3b794a6d36bdaa99e9baf54b75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c2a00460b6a16cf8de42e24b78eefc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e6a3411628fea90d0fcd8c8f264d48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fdfdbadbb37a2f1d556ffac8ec8bf86.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/5417ae8c323cff18afd3558e2f112b80.png)
(ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/946dccbf1011600189a1ccfa265f98eb.png)
(ii)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239154f54eca58e923bb9d1c9c1bc2bc.png)
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3 . 已知
,设函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eecac79abf96d888f02a5688e9037254.png)
(1)当
时,求曲线
在点
处的切线方程;
(2)当
时,若不等式
恒成立,求实数
的值;
(3)若函数
与
的图象没有交点,求实数
的取值范围.
(注:题中
为自然对数的底数,即
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f74efa75abdb28624ada33bec04ac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eecac79abf96d888f02a5688e9037254.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b7393fc425948d4261bb6c7d67f88e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dc6e69ad1a27916fb5c3d5901ded134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e431329beacff3d91446ee41bec9e02.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b7393fc425948d4261bb6c7d67f88e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7556f1dba39cc941c0cebd707517f338.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(注:题中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2beb22b735da7cb8054dd722450632f5.png)
您最近一年使用:0次
名校
4 . 已知
,函数
.
(1)当
时,求曲线
在点
处的切线方程;
(2)若
在区间
上存在两个不同的极值点.
①求
的取值范围;
②若当
时恒有
成立,求实数
的取值范围.
(参考数据:
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6db0d30efef15a981ce239f3541b99a.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2072fe5a3f23ac574dde4f0abb2fd5e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1fce155963060b2e5b9147a185897cc.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
②若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6df167612a71a4d841ceaa652983129.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9405361d7be3c9e4d462a4e955d8fe3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7c0309456de2cd6420ece4fbc5eeddb.png)
您最近一年使用:0次
2021-08-08更新
|
1121次组卷
|
4卷引用:浙江省绍兴市2020-2021学年高二下学期期末数学试题
名校
5 . 已知函数
.
(Ⅰ)讨论函数
极值点的个数;
(Ⅱ)若
,且对任意正数
都有
成立,求实数
的取值范围.(
为自然对数的底数).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd953437aa07828e999882c11069b6e6.png)
(Ⅰ)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b075157f85910dc164d7317fca4a0b25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
您最近一年使用:0次
2021-08-07更新
|
707次组卷
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3卷引用:浙江省宁波市九校2020-2021学年高二下学期期末联考数学试题
浙江省宁波市九校2020-2021学年高二下学期期末联考数学试题(已下线)专题01 《导数及其应用》中的典型题-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册) 福建省尤溪第一中学2021~2022学年高二下学期数学期末模拟卷(三)试题
名校
解题方法
6 . 已知函数
和
,对于任意
,
,且
时,都有
成立,则实数
的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a837a6fb26cc2ffa90e6e9b30eacf2d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2d1c8ac5aaf82f30dce8d6afa2aad36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4583b929691724ab0f2cf403a5aeda92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e938b003ed30316afc6163e1f856c3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
2021-08-07更新
|
889次组卷
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7卷引用:浙江省宁波市九校2020-2021学年高二下学期期末联考数学试题
浙江省宁波市九校2020-2021学年高二下学期期末联考数学试题浙江省嘉兴市桐乡市高级中学2021-2022学年高二上学期12月阶段教学质量检测数学试题英才大联考2022届高三上学期月考试卷二理科数学(全国卷)试题江西省七校2022届高三上学期第一次联考数学(理)试题(已下线)考点13 利用导数探求参数的范围问题-备战2022年高考数学典型试题解读与变式(已下线)专题40 导数压轴选择填空必刷100题-【千题百练】2022年新高考数学高频考点+题型专项千题百练(新高考适用)(已下线)第9题 构造函数利用单调性求参问题(压轴小题)
解题方法
7 . 已知
,
.
(1)当直线
与函数
的图象相切时,求实数
关于
的关系式
;
(2)若不等式
恒成立,求
的最大值;
(3)当
,
时,若
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ba67482fef87568dcf0a49e4d5c383.png)
(1)当直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3508bde870f283ed9f6c12eaaaaeeff.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29c7572463225bb3b65cb371f4496440.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f0281e6bbdbe08beeccb55adf84536.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14dc8a2a16ca1e7055ef64e74010c624.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2021-08-07更新
|
455次组卷
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2卷引用:浙江省湖州市2020-2021学年高二下学期期末数学试题
解题方法
8 . 若存在正实数x,y使得不等式
成立,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07dfc4eb56f069f67149c083b121c935.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edff1881635893293dd411ead8194aca.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
9 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c7ed99a74e126a05cb520f19c094020.png)
(1)求
在
处的切线方程;
(2)设函数
在定义域内有两个不同的极值点
、
,求实数
的取值范围;
(3)在(2)的条件下,令
且
,总有
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c7ed99a74e126a05cb520f19c094020.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb3a6e408c8304d1c0db065d54822dd7.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/0a6936d370d6a238a608ca56f87198de.png)
(3)在(2)的条件下,令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba93f19e4328de1bad07d33c7d47cb95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f787b7868a1a72ab17fc5a0357684b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
10 . 已知函数
,
(1)若
的图像在点
处的切线方程为
,求实数
值;
(2)讨论函数
的单调性;
(3)若函数
有两个不同的零点
,且不等式
对任意的
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3645c596f7658a21197d8ef284585296.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81158db42116f74e7b26e100f88dd535.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac490af25fb49d4f880bbac29a0ee874.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c38751b9fd2d478bc8628f4c49111601.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc4136bd17997e11a7f8abcb19f9018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f951e4c75822bdc2ff5e8eaea5cf80.png)
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