真题
解题方法
1 . 已知函数
在
上满足
,当
时
取得极值
.
(1)求
的单调区间和极大值;
(2)证明:对任意
、
,不等式
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/840903c8cb59e0302d7249cb1fa4b615.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca9a617f33b747c5f0d76f8f3db071a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明:对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a3502f1cd0038eb888dc121026c6820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ceaeebe50a5f78b52da0850741cee42.png)
您最近一年使用:0次
2020-06-23更新
|
405次组卷
|
4卷引用:2011年辽宁省瓦房店市五校高二上学期竞赛数学文卷
2 . 已知函数
.
(1)求曲线
在点
处的切线方程;
(2)若
,证明函数
有且仅有两个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b685f0a65a7b5bd0d06bbdd74fb74177.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
2020-06-03更新
|
466次组卷
|
2卷引用:2020届辽宁省辽南协作校高三第二次模拟考试数学文科试题
3 . 已知函数
.
(1)求曲线
在点
处的切线方程;
(2)若函数
在区间
有两个零点,分别为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5840993ac6b954b34c9b5eb906e6c9ad.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c6b6a11760d0724b0b60e55970e229.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be07753eab86fa9c439a65db51c9a9e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/574824d85f44d42246529ac135c0391c.png)
您最近一年使用:0次
2020-04-20更新
|
514次组卷
|
2卷引用:东北三省三校(哈师大附中、东北师大附中、辽宁省实验中学)2020届高三高考数学(文科)三模试题(内)
解题方法
4 . 已知
,函数
.
(1)
是函数数
的导函数,记
,若
在区间
上为单调函数,求实数a的取值范围;
(2)设实数
,求证:对任意实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
,总有
成立.
附:简单复合函数求导法则为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53d9d4064a54ac23003bfaf1a1e25d71.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585de67a3fc494297d375d339af6d153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13e38a5ee18ecf4af2d9a8443b4a7bc.png)
(2)设实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1e1b2fc3d27f0953c953a4cbad2c199.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60025fe6bbfd7645844c9e3e7a5871e6.png)
附:简单复合函数求导法则为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/691ffde938b490b959ae923b1169488b.png)
您最近一年使用:0次
2020-02-06更新
|
1085次组卷
|
3卷引用:2020届辽宁省实验中学、大连八中、大连二十四中、鞍山一中、东北育才学校高三上学期期末数学(文)试题
2020届辽宁省实验中学、大连八中、大连二十四中、鞍山一中、东北育才学校高三上学期期末数学(文)试题(已下线)专题04 巧妙构造函数,应用导数证明不等式问题(第一篇)-2020高考数学压轴题命题区间探究与突破人教A版(2019) 选择性必修第二册 过关斩将 第五章 一元函数的导数及其应用 5.3 导数在研究函数中的应用 5.3.1 函数的单调性
名校
解题方法
5 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e65ec3116eea684fc3a7137ec12e7b7.png)
(1)当
时,求
在区间
上的最大值和最小值;
(2)证明:当
时,在区间
上,不等式
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e65ec3116eea684fc3a7137ec12e7b7.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588e4f3d71158c22156afc4c4e0cad58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c0b6ca237b90b49a91d9d74d007efdc.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bad71d89cb1213d8796e1ee84fd171e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79fe3414b32bbd1190b41ed8307f905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6baf737e94c6c52e842c742690e482b.png)
您最近一年使用:0次
2020-03-20更新
|
562次组卷
|
4卷引用:辽宁省辽阳市东南协作校2019-2020学年高三上学期9月份月考数学理科试题
6 . 设
为实数,函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(Ⅰ)若
求
的极小值.
(Ⅱ)求证:当
且
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/064bf9686cd8d9c0fac79732d9465453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(Ⅱ)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea0753a8be31b5229563076c9aae09b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54ffe599065a802c34ce1736a5031cae.png)
您最近一年使用:0次
解题方法
7 . 已知函数
,曲线
在点
处的切线方程为
.
(1)求a的值;
(2)函数
(
为自然对数的底数),证明:对任意的
都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75c5b5e48448fa5c474f50cbec4c9a78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34f02ad9e7b210e9c0dd78658ac0ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/512f4c29ff276b7f35052ad4cc255ab5.png)
(1)求a的值;
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9775c7f63b572935984c0bbc2ca2613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966b60302d80d8613675bb3dd5c03164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67b6690ddc40697eefd6cb4fdedfa4a7.png)
您最近一年使用:0次
名校
解题方法
8 . 设函数
,
.
(1)证明:
;
(2)若
恒成立,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78ef81ecd203bcb697fa3245fb397f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f5bb24290556ffea6d57281bf80dd10.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8301c2c0f99db851d7208c510ef43ff5.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/190e8f02e870f4e30aa46673828e64b7.png)
您最近一年使用:0次
2020-04-16更新
|
193次组卷
|
3卷引用:辽宁省葫芦岛协作校2018-2019学年高二下学期第一次考试数学(理科)试题
9 . 已知函数
,
.
(1)若
,求函数
的单调区间;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e74da4b06c434c46d5a8958ad77f2592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c532b5af7b88f1c21a7584cfac5fea6c.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9c6398b022655e7ae74515ef717178.png)
您最近一年使用:0次
名校
10 . 已知函数
,
.
(1)若
,求证:当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54cc24a241f295237bdb2fce02771bd2.png)
(2)若不等式
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/597adeb88b25d5b0a57852e5c72d83fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3d07f9b89b24792b5e5cc639b399ced.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54cc24a241f295237bdb2fce02771bd2.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50414045ed12fe4da0b6a214a610be75.png)
您最近一年使用:0次
2019-10-23更新
|
793次组卷
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5卷引用:辽宁师范大学附属中学2019-2020学年高二下学期期中考试数学试题