已知函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
(1)当
,
时,求函数
在
上的最小值;
(2)若函数
在
与
处的切线互相垂直,求
的取值范围;
(3)设
,若函数
有两个极值点
,
,且
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/805d64f84621fa588f3d901795467cc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b86304c3e26200299a0480641525a283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.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/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/248a0e7a6d6d6762b3b2f19e596ad7b7.png)
更新时间:2019-06-25 22:00:26
|
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【推荐1】已知函数
.
(1)若函数
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的图象有一条斜率为1的公切线,求
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(2)设函数
,证明:当
时,
有且仅有两个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/739e9f9d0b66d8103a84716812c7d812.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
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(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b1c31098853d5b1638705a2b86f7b6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2f4630b66f80a5f2b7f186e49b321e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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解题方法
【推荐2】已知函数![](https://img.xkw.com/dksih/QBM/2010/5/20/1569737365667840/1569737370664960/STEM/3ce91e43ca374bb89f49f527c78b55a2.png?resizew=331)
(1)设两曲线
与
有公共点,且在公共点处的切线相同,若
,试建立
关于
的函数关系式;
(2)在(1)的条件下求
的最大值;
(3)若
时,函数
在(0,4)上为单调函数,求
的取值范围.
![](https://img.xkw.com/dksih/QBM/2010/5/20/1569737365667840/1569737370664960/STEM/3ce91e43ca374bb89f49f527c78b55a2.png?resizew=331)
(1)设两曲线
![](https://img.xkw.com/dksih/QBM/2010/5/20/1569737365667840/1569737370664960/STEM/5da9ec40fa8d48ba9fdcfb73e8718c19.png?resizew=61)
![](https://img.xkw.com/dksih/QBM/2010/5/20/1569737365667840/1569737370664960/STEM/8edd8c8d45c64cc5a727392c309cfcdf.png?resizew=61)
![](https://img.xkw.com/dksih/QBM/2010/5/20/1569737365667840/1569737370664960/STEM/d02ac6b8b380407daa6bad1cfa93346e.png?resizew=39)
![](https://img.xkw.com/dksih/QBM/2010/5/20/1569737365667840/1569737370664960/STEM/7d2dc07cf9d94537a2cae9d87358f9f5.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2010/5/20/1569737365667840/1569737370664960/STEM/56a0a4aafd364f2e9cbe6819c83d0a6b.png?resizew=13)
(2)在(1)的条件下求
![](https://img.xkw.com/dksih/QBM/2010/5/20/1569737365667840/1569737370664960/STEM/7d2dc07cf9d94537a2cae9d87358f9f5.png?resizew=13)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d4edf8ee0c3bf399477afcd323562a2.png)
![](https://img.xkw.com/dksih/QBM/2010/5/20/1569737365667840/1569737370664960/STEM/56a0a4aafd364f2e9cbe6819c83d0a6b.png?resizew=13)
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解答题-证明题
|
较难
(0.4)
名校
【推荐1】设函数
.
(1)求
的单调区间;
(2)若
,设
,求证:
不存在极大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ece62ea5c5db9bf5982af499f2ecea8.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68072473a5106f93e3026d992859f7a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
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解答题-证明题
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较难
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【推荐2】已知函数
,
为实常数.
(Ⅰ)设
,当
时,求函数
的单调区间;
(Ⅱ)当
时,直线
、
与函数
、
的图象一共有四个不同的交点,且以此四点为顶点的四边形恰为平行四边形.
求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2339c1a30f2e64c05a2aea70bbb210.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅰ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66dea8b0511ee08a5754cfbcf322539b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2316563595e29fd4279845ab8afc5ba2.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22362247969ade54a950a49157ff67f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d71f015144ffaf1faec94a259b4a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6eec516df711bb0bafbe13c1d6eeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e03ad0c315806342d6cd732a0b91a3.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f74cad982021f19f8cfc0470edb39260.png)
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【推荐1】已知函数
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处的切线的斜率是
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(1)求实数
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(2)求函数
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(1)求实数
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(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fdc02f00cf00a6dfd88b53a90f1f7a4.png)
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较难
(0.4)
名校
【推荐2】已知函数
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(1)当
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(2)证明:对任意
,函数
有两个不同的零点
,满足
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4f742c29cc2e1d4231f733a44991fd.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明:对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf9befc3b336d83b83bcfcbc19c0752.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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【推荐3】已知函数
,
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(1)若
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(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffb24a22b48faea5fa599a20786cdce2.png)
您最近一年使用:0次
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较难
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名校
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【推荐1】设函数
.
(1)若函数
有两个不同的极值点,求实数
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(2)若
,
,
,当
时,不等式
恒成立,试求正整数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731135342f2c43be56c2484b0e72fcc4.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7399fcd570d1de4057f2059759d18cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eef34feb866c89813b94cf4f0c7074f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddd4fab5aaffb14a9e1486fca889a29b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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【推荐2】若对于函数
图像上的点
,在函数
的图象上存在点
,使得
与
关于坐标原点对称,求实数
的取范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8504b809b576bd72be077c16847074d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e224deca0566bb6b49d942e914e56b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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