解题方法
1 . 已知函数
,其中
为自然对数的底数.
(1)当
,
时,证明:
;
(2)当
时,讨论函数
的极值点的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1537d9c075809d0d2886d2815bd8cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff5a8f648d375cc6ccf6649cab698c6.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1487e9e4bd2c25c594e655e95c44d574.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70333079f6699dd59d4887f06988f219.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6edad7047f44b24fbd5c03f56ebc8df.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a54c343ea9ecc5831922840590b9c7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
2018-04-27更新
|
572次组卷
|
2卷引用:湖北省荆州市2018届高三质量检查(III)数学文试题
名校
解题方法
2 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aed762478d4c1460ea95a9dd9a201d1e.png)
.
(1)讨论函数
在定义域内的极值点的个数;
(2)若函数
在
处取得极值,且对任意
,
恒成立,求实数
的取值范围;
(3)当
时,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aed762478d4c1460ea95a9dd9a201d1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3442ce843d02b54055cfad056b091d7.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc4136bd17997e11a7f8abcb19f9018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71944acb81a6e3e219f6f6f748ee3f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb3915bbb296ffc89ba0de46989ad0d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/672391057e618e316bea23939c3fe457.png)
您最近一年使用:0次
2018-03-31更新
|
700次组卷
|
5卷引用:湖北省荆州中学2020-2021学年高二上学期期末数学试题
3 . 已知函数
,在
处的切线方程为
.
(1)求
的值
(2)当
且
时,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43dddbc3af897e179102381f714e9023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7a470c02b9ce962252644a6b3754f8f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e30c903d8f8a05332af0b19e7e40df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/649117a986978cb811617666300b4464.png)
您最近一年使用:0次
4 . 已知函数
,其中
,
为自然对数的底数.
(Ⅰ)设
是函数
的导函数,讨论
在
上的单调性;
(Ⅱ)设
,证明:当
时,
;
(Ⅲ)若
,函数
在区间
内有零点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e4fe745e7d66eb2210136315b13eed1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360ff131c51a4ef6745538c18cec92c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797bbd18359c9a29842b39109b3a0aac.png)
(Ⅰ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
(Ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d9f7907ab3e63c5cf0f5637dc5ae11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06dbbe0e48670b3e3fe1c02fd42ea55c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2ad8c947e7b6d61c611bb1b9df7eecf.png)
(Ⅲ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3471484b64504fc545398f52be830010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
5 . 已知函数
与
.
(1)若曲线
与曲线
恰好相切于点
,求实数
的值;
(2)当
时,
恒成立,求实数
的取值范围;
(3)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7c9e24acba1551b8bc8020eec7e6afc.png)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b3a1a500bbe88855c56e67c6d30eb5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7acb7a9a20f1742372235700600c7862.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f449cadb49859b80c31ef1f68bfe81b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bce2594833690eedb3328fe747feb3a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b4955c5adc717b7f6f0b975e0724ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7c9e24acba1551b8bc8020eec7e6afc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9410e6383c58f32edfda6503e7104524.png)
您最近一年使用:0次
2017-11-05更新
|
685次组卷
|
6卷引用:湖北省荆州中学2018届高三上学期第三次双周考(11月)数学(理)试题
6 . 已知函数
是偶函数
(Ⅰ)求常数
的值,并写出函数
的单调区间(不要求证明 );
(Ⅱ)若实数
满足
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302b2794889f872803381b68ea077896.png)
(Ⅰ)求常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(Ⅱ)若实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059b8ad78b0325a7cfe82424122cf2ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
11-12高三上·湖北荆州·阶段练习
解题方法
7 . 已知函数
.(e是自然对数的底数)
(1)判断
在
上是否是单调函数,并写出
在该区间上的最小值;
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/222262608fdf7a1b247dd8f32db7352f.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed2f490aac02631c2ed9e6b76354a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638b532bd69d953432b7cbb67a746ab4.png)
您最近一年使用:0次
8 . 已知函数
,
,
.
(1)求函数
的单调区间;
(2)若存在
,使得
成立,求
的取值范围;
(3)设
是函数
的两个不同零点,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f073bddfafdab88435cc515167899d19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de66ba4a3962aadc0e89a309f529a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bad324be3bebd9c8051c5f502df2b536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab42740d8f095b5f7825d14c4c312096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e36579ca325dacb2fc440d18de388944.png)
您最近一年使用:0次
12-13高二上·湖北荆州·期末
解题方法
9 . 设函数
,其中a为常数.
(1)证明:对任意
的图象恒过定点;
(2)当
时,判断函数
是否存在极值?若存在,求出极值;若不存在,说明理由;
(3)若对任意
时,
恒为定义域上的增函数,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ffcad774c5ec7b1bd449203cdb9a866.png)
(1)证明:对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de18ac322e3592d01cbdbcd4441642a.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
(3)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b536ab6c13d606a9f1efa9aefde3d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
10 . 已知
.
(1)若
有两个零点,求
的范围;
(2)若
有两个极值点,求
的范围;
(3)在(2)的条件下,若
的两个极值点为
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dfbebe96106abe60a93fa0a23ad3e9d.png)
(1)若
![](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/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)在(2)的条件下,若
![](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/ffd888afdcfdb3e91a157d50f65e915e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34c369c4bc49337cf1b9f783612bd04c.png)
您最近一年使用:0次
2018-02-17更新
|
1306次组卷
|
2卷引用:湖北省荆州中学、宜昌一中等“荆、荆、襄、宜四地七校考试联盟”2018届高三2月联考数学(文)试题2