名校
1 . 已知
,其中常数
.
(1)若
恒成立,求实数
的取值范围;
(2)若函数
有两个零点
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74ce64b31f7aa2871b9d47c952ba9917.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2aabc96b7433bba077ceac76d8f0d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729873a7dabcd4143318e644ff020b76.png)
您最近一年使用:0次
2020-02-06更新
|
528次组卷
|
2卷引用:2020届辽宁省实验中学、大连八中、大连二十四中、鞍山一中、东北育才学校高三上学期期末数学(理)试题
解题方法
2 . 已知函数
.
(Ⅰ)若函数
在
上是减函数,求实数
的取值范围;
(Ⅱ)当
时,求证:对任意
,函数
的图象均在
轴上方.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbe10d93fcec2543fb3f0cd0509ffd7b.png)
(Ⅰ)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c1756b564bf1d998d8179637011c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/539ed85a90ec295155431c5c5b2b0efb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
2020-04-04更新
|
625次组卷
|
3卷引用:辽宁省沈阳市郊联体2019-2020学年高二下学期期末考试数学试题
名校
解题方法
3 . 已知函数
(
是自然对数的底数),
.
(1)若
,求
的极值;
(2)对任意
都有
成立,求实数
的取值范围.
(3)对任意
证明:
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331d70266454df40256268b19b055a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2beb22b735da7cb8054dd722450632f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf42173c44d1da998520c2c8613b422.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f3c2be7482719651bcf491949681e05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c388166862b3ccfcc7ca749ebe5949.png)
(2)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a6568f780ebca9f00f5f8b1a90eb633.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b66a0a8019c3ffc4e77731118cc98f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a6568f780ebca9f00f5f8b1a90eb633.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0454b49c4a7006a49a43ceec249bbd68.png)
您最近一年使用:0次
名校
4 . 已知函数
.
(1)判断函数
在区间
上零点的个数,并说明理由.
(2)当
时,
①比较
与
的大小关系,并说明理由;
②证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9df075cd20f79486d88d80ee12fc897d.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a3cee5e50ee4f1dfbcf0ff0312fef1b.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c87874458fabe50aff5e19d586d5d94.png)
①比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b8d3f7a166ff5db92d9ee0014a960d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4c7d5aee3615cdb65b3dd4e24da7bc6.png)
②证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8460fe08249b907ea2ff411722360aa1.png)
您最近一年使用:0次
2020-06-08更新
|
765次组卷
|
2卷引用:辽宁省沈阳市第二中学2022-2023学年高三上学期期中数学试题
名校
5 . 已知函数f(x)=ex﹣lnx+ax(a∈R).
(1)当a=﹣e+1时,求函数f(x)的单调区间;
(2)当a≥﹣1时,求证:f(x)>0.
(1)当a=﹣e+1时,求函数f(x)的单调区间;
(2)当a≥﹣1时,求证:f(x)>0.
您最近一年使用:0次
6 . 已知函数
在点
处的切线方程为
.
(1)求
,
;
(2)函数
图像与
轴负半轴的交点为
,且在点
处的切线方程为
,函数
,
,求
的最小值;
(3)关于
的方程
有两个实数根
,
,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/030862ef2a2a8187717c5a5eb1a95ecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cf8ac3b24be627dc3417ee1e95cb9a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d00ec54109a3374edd4e90ad7436a1d1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f786a5701dc1a8a015e8843c3360151b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/575df2758d348d7d5b889fb5ad8ddafe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
(3)关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9c0d827ef8598ba6b70b34b2bdcd1e9.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/6c5575709e32534b090fb193ed386446.png)
您最近一年使用:0次
2020-05-13更新
|
4961次组卷
|
8卷引用:辽宁省沈阳市2023届高三三模数学试题
辽宁省沈阳市2023届高三三模数学试题辽宁省沈阳市2023届高三三模数学试题2020年山东省日照市高三一模数学试题(已下线)专题八 函数与导数-2020山东模拟题分类汇编(已下线)极值点偏移专题07极值点偏移问题的函数选取(已下线)第12讲 双变量不等式:剪刀模型-突破2022年新高考数学导数压轴解答题精选精练2020届山东日照高三4月模拟考试(一模)数学试题(已下线)重难点突破06 双变量问题(六大题型)
名校
解题方法
7 . 已知函数
(
为常数).
(1)讨论函数
的单调性;
(2)若函数
在
内有极值,试比较
与
的大小,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061e204a8bb1e2032069e6c0c39572bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8257be0efe83f4efa240984fe7f20841.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e291eb3e92d13e827bb011f62dca70b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0b52fba05677343daa1d9e8cffc40d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3e200b5722f1d8baf2bd205f524361a.png)
您最近一年使用:0次
2020-03-09更新
|
676次组卷
|
3卷引用:2020届辽宁省沈阳市东北育才学校高三第六次模拟数学理科试题
名校
8 . 已知函数
(
为自然对数的底数).
(1)讨论函数
的单调性;
(2)求证:当
时,对
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71df4708b254680f6e4eb99e979c8264.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c9277f254e74135faa6ddde3e2b8e35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7364911f4597bfe996da15bf929c7fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5967cc62862986840af4dd29df4bcc41.png)
您最近一年使用:0次
2019-05-15更新
|
1765次组卷
|
4卷引用:辽宁省沈阳市东北育才学校2019-2020学年高三上学期第三次模拟数学(文)试题
名校
9 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/051a570985af1d9fcd46bcd3e01b03c6.png)
(1)求
的单调区间;
(2)若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/368e657d8ad0fd9b14b21db3f7369a7c.png)
(i)证明
恰有两个零点;
(ii)设
为
的极值点,
为
的零点,且
证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/051a570985af1d9fcd46bcd3e01b03c6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/368e657d8ad0fd9b14b21db3f7369a7c.png)
(i)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(ii)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.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/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64df36fd0b37b72d36fe21e10f5d67f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5595ccc1b475751dd21cbe911231dc75.png)
您最近一年使用:0次
名校
10 . 已知函数
的图象在
处的切线斜率为
.
(1)求实数
的值,并讨论
的单调性;
(2)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66aa5d9819812f0a2aa469471b94d5f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e4f19bc4ea459e362a5acaaa82c8cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/409eb3f8c7654e0bf87c56eabeca6f34.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/453dbcdf18ab830f5959a4988a1ec048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/880270d8cc1cf4f9e380f8963cb9f84f.png)
您最近一年使用:0次
2019-11-06更新
|
940次组卷
|
3卷引用:辽宁省沈阳市郊联体2020届高三上学期期末考试数学(文)试题