名校
解题方法
1 . 已知函数
.
(1)求函数
的图象在
(
为自然对数的底数)处的切线方程;
(2)若对任意的
,均有
,则称
为
在区间
上的下界函数,
为
在区间
上的上界函数.
①若
,求证:
为
在
上的上界函数;
②若
,
为
在
上的下界函数,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5889da8087df7d1a5bd254a2f9b59edc.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c81965854dbe52a513241f196edf2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02cab1add26335b3cb43d5b54c7c853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ea4d74f476f741b75a448ee01c0e86c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b426608a06477f57cb994f4d00e4465d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0f121036d30c000b01b7be98d9c8a99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0f121036d30c000b01b7be98d9c8a99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b426608a06477f57cb994f4d00e4465d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d29b9ff6b1593f901fbb0bb2472e08c6.png)
![](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/6ab5e0524def52baf53480b8726784ed.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2e75907a1b513cdf63614b4b68ece89.png)
![](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/d7dcdd87d593df4a5c5e98d47fe1cfa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2020-05-14更新
|
647次组卷
|
4卷引用:辽宁省锦州市北镇市满族高级中学2024届高三下学期第一次月考数学试题
辽宁省锦州市北镇市满族高级中学2024届高三下学期第一次月考数学试题2020届江苏省高三高考全真模拟(八)数学试题江苏省南京航空航天大学附属高级中学2020-2021学年高二下学期第二次学情调研数学试题(已下线)拔高点突破05 函数与导数背景下的新定义压轴解答题(九大题型)
名校
2 . 已知函数
(
是自然对数的底数).证明:
(1)
存在唯一的极值点;
(2)
有且仅有两个实根,且两个实根互为相反数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c86f5acf6f6e1dad6002f68d75961d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/502c4ff1cd420b9da4de849e63c307e9.png)
您最近一年使用:0次
2020-01-28更新
|
559次组卷
|
5卷引用:辽宁省锦州市黑山县黑山中学2020届高三6月模拟考试数学(文)试题
辽宁省锦州市黑山县黑山中学2020届高三6月模拟考试数学(文)试题2020届河北省张家口市高三上学期期末教学质量监测数学(文)试题黑龙江省大庆铁人中学2020届高三考前模拟训练文科数学试题(已下线)专题02 导数(文)第三篇-备战2020高考数学黄金30题系列之压轴题(新课标版)(已下线)专题02 导数(理)第三篇-备战2020高考数学黄金30题系列之压轴题(新课标版)
名校
3 . 已知函数
.
(1)若
,求
的单调区间;
(2)证明:(i)
;
(ii)对任意
,
对
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/345721816b8153ed40ad4de0c44e6837.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/191d9381c4f252fbb5553ba72462d0aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明:(i)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4123b4b9e76a410c64a08c0a8c134664.png)
(ii)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c88f040c4b0dcd80fde0f778d4909a09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f30c9ffa4052e3a8eb99846dfa4277fb.png)
您最近一年使用:0次
2020-03-19更新
|
565次组卷
|
5卷引用:2020届辽宁省锦州市高三4月质量检测(一模)数学(文)试题
名校
4 . 已知函数
.
(1)求函数
的单调区间;
(2)当
时,证明:对任意的
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5a91ddf0ff519057f7d43d5ec4528b2.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5162a9e4f36ffa84d1d82df62e23f016.png)
您最近一年使用:0次
2019-12-04更新
|
954次组卷
|
6卷引用:2020届辽宁省锦州市渤大附中、育明高中高三下学期开学摸底考试数学(理)试题
名校
5 . 已知函数
.
⑴当
时,证明:
在
上有唯一零点;
(2)若
对
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d88d5d9d5c28b0a9e1216c2ea344896a.png)
⑴当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ff8dca35b759d3051b62badd7d76bc.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e2405c4822bceae1cf191edb502d3b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850e0c73a11ea1a888ce61f19078eaaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2019-09-23更新
|
1335次组卷
|
4卷引用:辽宁省锦州市2020-2021学年高二下学期期末数学试题
解题方法
6 . 已知函数
.
(1)求
的最大值
;
(2)若
恒成立,求
的值;
(3)在(2)的条件下,设
在
上的最小值为
求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c72739aa78d4c0a8f997eb0e0b0cf5a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00db35ee7944fda36e4e085467c32094.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)在(2)的条件下,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/909fd8fc2c4bf5ac2d8f40bb67e7a45e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7554e25703f84740d666db414aba4be0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c40b92df80274b771e86aafe97e6010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eb183572e9a76d454e53f095abb3d22.png)
您最近一年使用:0次
名校
7 . 已知函数
(
).
(Ⅰ)若
,恒有
成立,求实数
的取值范围;
(Ⅱ)若函数
有两个相异极值点
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89482617f5e4b14a405f722240c7f98c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29c7572463225bb3b65cb371f4496440.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅱ)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68072473a5106f93e3026d992859f7a1.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/c7165816933a79a57ab975543861cbcd.png)
您最近一年使用:0次
2017-03-30更新
|
990次组卷
|
6卷引用:辽宁省锦州市2017届高三质量检测(二)数学(理)试题
8 . 已知
,设函数
.
(1)若
,证明:存在唯一实数
,使得
;
(2)若当
时,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/768f6e40dd244e71a0846899e23e8739.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe6eb719aedac6e1ddc9e6d3ecaef5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ce6e3afa040469df60d658da3a3efe.png)
(2)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098ba1b18284a1871c4bba6b6aaca061.png)
您最近一年使用:0次
2017-06-14更新
|
1328次组卷
|
2卷引用:辽宁省锦州市2017届高三质量检测(一)数学(理)试题
9 . 已知函数
.令
.
(1)当
时,求
的单调递增区间;
(2)若关于
的不等式
恒成立,求整数
的最小值;
(3) 若
,正实数
满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed8f50c593349a0d6284b301e7c619ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d9b1afcfc57a1f51ba1482ad891090b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8493a0cd10d3d0399173c04163740a38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29593bc1d6843157760bd47b8559d0ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3) 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfaa4db9cf246f56782a5d215b74d1c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c369c1390f720564c30a3808bfe9eb66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c69225963b7e63eb6d79b25f8c868d96.png)
您最近一年使用:0次
10-11高二下·辽宁锦州·期中
解题方法
10 . 已知函数
图象上一点
处的切线方程为
.
(1)求
的值;
(2)若方程
在
内有两个不等实根,求
的取值范围(其中
为自然对数的底数);
(3)令
,若
的图象与
轴交于
,
(其中
),
的中点为
,求证:
在
处的导数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3606d78a0de8fede3ff9909a23e6c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/622a3bcf97cdce271d1112ccab1d542b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68bb091a949c34e1a6113c1580a1237f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b7d58eeffa7673676dcf4f892090ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5920943d99f2044fef69d29e4aaeecb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(3)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab6b28c29a9e823cf1d6c764323d7e15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f5cd8f5dd05a04331f43a2ba55953b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f399b1f59ee66176b4038e91a3eb1bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0002d5a96d9201fef8aaff81df5d35fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cc3194ba080235c76aac4bdf2d87fc4.png)
您最近一年使用:0次