名校
1 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42fe84ecdcafb66c2e3a4dd702503729.png)
(1)若函数
在
上有两个零点,求实数a的取值范围.
(2)探究:是否存在正数a,使得
在
上单调递增,若存在,求出a的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42fe84ecdcafb66c2e3a4dd702503729.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2ec965488c7e1cea085463c7731285.png)
(2)探究:是否存在正数a,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ce65398670f45cc4a47f432df1e8487.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
您最近一年使用:0次
2023-05-18更新
|
615次组卷
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2卷引用:华大新高考联盟(西工大附中、西安铁一中、郑州外国语学校、郑州一中、合肥一中、八中等)2023届高三高考预测理科数学试题
名校
解题方法
2 . 已知函数
,
.
(1)讨论
极值点的个数;
(2)若
恰有三个零点
和两个极值点
.
(ⅰ)证明:
;
(ⅱ)若
,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3aa05bf7390b688b4923b3e57f699a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)讨论
![](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/d277a5747e76c386963b5c98a7c69745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
(ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d1540b6b10f07a867618a1eec02e2a1.png)
(ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb7961cbe98aac6a5fdee94582c341b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ddb4410c39ba1112ea24b342ec119f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79fdabb9ea14c4a8a2a2f874c071480b.png)
您最近一年使用:0次
2023-05-08更新
|
2155次组卷
|
9卷引用:陕西省西安市长安一中2024届高三上学期第四次教学质量检测数学(理)试题
3 . 已知函数
,
.
(1)讨论
的单调区间;
(2)若
有3个零点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dea1795f20d8385239c0a61a4403e82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
(1)讨论
![](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/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-05-07更新
|
1111次组卷
|
6卷引用:陕西省商洛市2023届高三三模文科数学试题
名校
4 . 若函数
在
内有且只有一个零点,则
在
上的最大值与最小值的和为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966cbd29fa712d61d4f96406140e31ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ead3fdcb8fe8f5eb3dbe7d96cabc28b.png)
您最近一年使用:0次
2023-05-06更新
|
481次组卷
|
5卷引用:陕西省西安市长安区2023届高三一模理科数学试题
陕西省西安市长安区2023届高三一模理科数学试题陕西省西安市长安区2023届高三一模文科数学试题广东省茂名市第一中学2023届高三下学期5月第二次半月考数学试题(已下线)考点19 导数的应用--函数零点问题 2024届高考数学考点总动员【练】(已下线)第三章 重点专攻三 函数零点问题(A素养养成卷)
名校
5 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93848931db33eeb42d3522f4d7260072.png)
(1)判断函数
的零点个数;
(2)证明:当
时,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93848931db33eeb42d3522f4d7260072.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cff7a7deafe061d63e324c12867f958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/198eee97c7d4c6c56e8b163d4acc656d.png)
您最近一年使用:0次
6 . 已知函数
.
(1)当
时,求曲线
在
处的切线方程;
(2)若函数
在定义域内有两个零点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a91e3809fdadcd129e5d8a6e1a3b1cd1.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解题方法
7 . 已知函数
,
,
.
(1)设
的导函数为
,当
有两个零点时,求实数m的取值范围;
(2)设
,
,当
时,若
恒成立,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fabaee76e00fee92b0f43f794c86d4cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0248603624ce20c88c4251047bc0f4df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e16af0c2432394fd7eecff17e6bb2a8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf673fb1ab1e0c28cacad455d4ed4eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4921923069c4f38a0af1ff8637e35b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0191a8c408a4350182aef2722e420338.png)
您最近一年使用:0次
8 . 已知函数
,
,其中
.
(1)讨论函数
的单调性;
(2)若方程
恰有两个根,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5eb06ca8e7eb30d4f183bcda8f35f41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdfec42a48e22b99f32c4bb106bbef40.png)
您最近一年使用:0次
2023-04-22更新
|
788次组卷
|
3卷引用:陕西省渭南市大荔县2024届高三一模理科数学试题
名校
9 . 已知函数
.
(1)当
时,求函数
的极值;
(2)证明函数
的图象与x轴至多有两个交点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f797fbaa3f2168131355848a2b4288e.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
名校
10 . 已知函数
,
,令
,若函数
存在3个零点,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe1b2817c2fd871797c9f9e5bf20cdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deb0eb459926b273cad555bb9049035b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ee557df36a39a62f0d7437aab4fb9e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6551c3292a48d8d875298f54ef996cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2023-04-20更新
|
400次组卷
|
2卷引用:陕西省铜川市2023届高三二模文科数学试题