解题方法
1 . 已知函数
,其中
.
(1)当
时,求证:
;
(2)对任意
,存在
,使
成立,求a的取值范围.(其中e是自然对数的底数,e=2.71828…).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/341d19c2f2a5af3349261c61998a6de7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cc0b119ea503a4a50649ac65ac83d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
(2)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e7af2948fab13d90b4b479b0d160263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe29e66d8c062cc4fde8943bbc14b4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c565c47a491207f4cda5413c970071a7.png)
您最近一年使用:0次
解题方法
2 . 已知函数
(其中
,
是自然对数的底数,
).
(1)当
时,求函数
的极值;
(2)若
恒成立,求实数
的取值范围;
(3)求证:对任意正整数
,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/541abddae604771288792267038050b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99d68916b4fdf0d3cf909ef3cd6ce7bc.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ffecb03c47be920254c4ccffa5b222.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)求证:对任意正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f9792f2af54ceb900ca533e71b4c850.png)
您最近一年使用:0次
2016-12-03更新
|
542次组卷
|
3卷引用:2015届四川省资阳市高三第二次诊断性考理科数学试卷
13-14高二下·四川资阳·期末
名校
3 . 已知函数
(
).
(1)当
时,求
的图象在
处的切线方程;
(2)若函数
在
上有两个零点,求实数
的取值范围;
(3)若函数
的图象与
轴有两个不同的交点
,且
,
求证:
(其中
是
的导函数).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6640d06b4fdf0ec3c57f6e7d355ebae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6178543c569ba9983fa0180bd5be7e02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d1733a7dc9eb1c899eb5153d4b006ae.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b803f91177e9a70ed706d36308103d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d41acc47493556617fe7b9e55093d10.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c158a550aaa60c8a2282649dae147e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
2016-12-03更新
|
979次组卷
|
5卷引用:2013-2014学年四川省资阳市高二下学期期末考试理科数学试卷
(已下线)2013-2014学年四川省资阳市高二下学期期末考试理科数学试卷(已下线)2015届湖南省娄底市高中名校高三9月联考文科数学试卷天津市咸水沽第一中学2020-2021学年高三上学期第一次月考数学试题(已下线)数学-2022年高考押题预测卷01(江苏专用)四川省成都市石室阳安中学2024届高三上学期12月月考数学(文)试题
名校
4 . 已知函数
(其中
,
为自然对数的底数,
…).
(1)若函数
仅有一个极值点,求
的取值范围;
(2)证明:当
时,函数
有两个零点
,
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9807a4abd58fc71d3841b1de1032df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74cf2b836467c579db0e5164f9511aae.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f41c6b9fa72109ba69163a5c6b7874a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.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/169bc93354f7728330d74d7e07115e15.png)
您最近一年使用:0次
2017-02-22更新
|
1202次组卷
|
3卷引用:2017届四川省资阳市高三上学期期末考试数学(理)试卷
2012·四川资阳·二模
解题方法
5 . 设函数
,函数
(其中
,e是自然对数的底数).
(1)当
时,求函数
的极值;
(2)若
在
上恒成立,求实数a的取值范围;
(3)设
,求证:
(其中e是自然对数的底数).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdce8760fb1984790f09514693e32bc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3026a05bfbad9e49d48b623d3f2e5e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab4d6062e6e6fef7275687b982fad0a0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b4955c5adc717b7f6f0b975e0724ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe86cace140f2c3588ab115837bbfc9e.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/119c680efb11bf47bba35b246aa5f4d3.png)
您最近一年使用:0次
解题方法
6 . 已知函数
.
(1)若
单调递增,求a的取值范围;
(2)若
有两个极值点
,其中
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceaeffa5e06d5be0f20e811c7269ac37.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](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/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9756aa8d48289c558f090521dbd98373.png)
您最近一年使用:0次
解题方法
7 . 已知函数
.
(1)若
单调递增,求
的取值范围;
(2)若
有两个极值点
,
,其中
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/324192fdb0115465826b5cc78c42f192.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/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/17407ee03c06b58584e3bdcbdb1d6efd.png)
您最近一年使用:0次
名校
8 . 已知
,
.
(1)讨论
的单调区间;
(2)当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2357cadf468245dd3c369066757e2690.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd9218a657b17654c5d757a6f7dee9a.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59d4a5a1125a1e36de0a663434807d51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d72357c3d0c3e1c4fa6eda1ddf613b4e.png)
您最近一年使用:0次
2020-01-28更新
|
1523次组卷
|
12卷引用:四川省资阳市高中2021-2022学年高三上学期第二次诊断性考试数学(理)试题
四川省资阳市高中2021-2022学年高三上学期第二次诊断性考试数学(理)试题四川省资阳市2022届高三二诊数学理科试题2020届湖南省益阳市高三上学期期末数学(理)试题2020届高三2月第01期(考点03)(理科)-《新题速递·数学》(已下线)必刷卷05-2020年高考数学必刷试卷(新高考)【学科网名师堂】-《2020年新高考政策解读与配套资源》2020届山西省大同市第一中学高三2月模拟(一)数学(理)试题2020届四川省南充高级中学高三2月线上月考数学(理)试题2020届四川省阆中中学高三下学期第一次在线考试(3月)数学(理)试题(已下线)卷05-2020年高考数学冲刺逆袭必备卷(山东、海南专用)【学科网名师堂】四川省泸州市泸县第二中学2022届高三下学期二诊模拟考试数学(理)试题辽宁省六校协作体2021-2022学年高二下学期第三次联考数学试题湖北省恩施州2020届高三上学期期末理科数学试题