已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4b615d0c4efb8ccae241c89ff93a4b.png)
,
为其导函数,且
时
有极小值
.
(1)求
的单调递减区间;
(2)若
,
,当
时,对于任意
,
和
的值至少有一个是正数,求实数
的取值范围;
(3)若不等式
(
为正整数)对任意正实数
恒成立,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4b615d0c4efb8ccae241c89ff93a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa76a059e95088cc306d55ce17b748d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3aab28a20b5bf47040aaec03b1eb550.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a91dc6c1164cc1fcf3c54176e3ed73f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/117243abfb3f31b4e8d1dc826abdb9db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/629e30f8084bd1867d601ab4e6c871d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
13-14高三下·江苏淮安·阶段练习 查看更多[3]
(已下线)2014届江苏省淮安市高三5月信息卷理科数学试卷2016届江苏省海头高级中学高三12月月考数学试卷(已下线)专题3-6 导数压轴大题归类(1)-2022年高考数学毕业班二轮热点题型归纳与变式演练(全国通用)
更新时间:2016-12-03 02:03:50
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【推荐1】已知函数
.
(1)当
时,如果函数
有唯一的极值点且为极小值点,求实数a的取值范围.
(2)若直线
与两条曲线
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d286f10c2662c15a7e6b45394d20f56c.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/238a16cec2f71322a7ca79778d9a9465.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ead6a3dbd03539ef5e0807be57bb1e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
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【推荐2】已知函数
,
.
(Ⅰ)求曲线
在
处的切线方程;
(Ⅱ)求函数
在
上的单调区间;
(Ⅲ)证明:对任意的实数
,
,
,都有
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f8ee7ab2d035b701e061c8483d8b836.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6ddf9f127d8405ae8dac5e0f6b1d6c5.png)
(Ⅰ)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/068ff25c767fcbe6fe596d996031eed1.png)
(Ⅱ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a80708bb56041678e6256ca37ec2355.png)
(Ⅲ)证明:对任意的实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/577ccbade03c39dfda89c15a0de82c3e.png)
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解题方法
【推荐1】已知函数
(
,
为自然对数的底数).
(1)若函数
存在极值点,求
的取值范围;
(2)设
,若不等式
在
上恒成立,求
的最大整数值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16841eed2c9d9a5b7109154f490ec4af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61eb83b411f6c92b5cccdae36e199292.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/444eb0e61e82a55bd0ad2f19756e229d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a6330540758a21f46fc7a6d1e6328d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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较难
(0.4)
【推荐2】设函数
,其中
为常数.
(1)当
时,求函数极值;
(2)若对任意
时,
恒为定义域上的增函数,求
的最大值.
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(1)当
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(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/660b6eb67d1bf4c9d65347962af4bc62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
【推荐1】设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbd18a365538d3c908f83f153f07b81b.png)
(1)当
,求函数
的零点个数.
(2)函数
,若对任意
,恒有
,求实数
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbd18a365538d3c908f83f153f07b81b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fadd2e6f0aa16c2c466c904474ffc79c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)函数
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解答题-问答题
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较难
(0.4)
名校
【推荐2】已知函数
.
(1)当
时,求曲线
在点
处的切线方程;
(2)当
时,若关于x的不等式
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcc0969b88e6bac7ca47ad6667476721.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf46dc84732526c826d84a71c407ea89.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/538dd8de4fc120baf2c60159369a1661.png)
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