已知函数
.
(1)若函数
在区间
上单调递增,求实数
的取值范围;
(2)求证:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd05b00a4f9faecda35c4214890773a7.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6d804ef44bfc64f824b0ccef71765e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
22-23高二下·福建漳州·期末 查看更多[5]
福建省漳州市2022-2023学年高二下学期期末教学质量检测数学试题(已下线)专题突破卷10 导数与不等式证明(已下线)模块一 专题3 导数(人教A)3广东省中山市2024届高三上学期第三次月考数学试题福建省福州教育学院附属中学2023-2024学年高二上学期期末考试数学试题
更新时间:2023-07-16 18:03:35
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解答题
|
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(0.4)
真题
解题方法
【推荐1】已知函数
,其中
,
为参数,且
.
(1)当
时,判断函数
是否有极值;
(2)要使函数
的极小值大于零,求参数
的取值范围;
(3)若对(2)中所求的取值范围内的任意参数
,函数
在区间
内都是增函数,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1efdd5a3b986676e9f69c380124a77c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851eae00e3369068e33a7e6420483883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a47e84afb05b6c092f85152eb9bc3c82.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc25ff51adfd89d4fc8280f9f19de6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)要使函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(3)若对(2)中所求的取值范围内的任意参数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27fdf6fc93610580e460c1ef6dd7c9f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐2】已知函数
(
,
为自然对数的底数).
(1)讨论函数
的单调性;
(2)若
,函数
在
上为增函数,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8c207efd83d75c1f69237d97616c726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.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)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0ea2a93a66e9cabaee2aa7daa7d50ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/189b2da6c420bf8f8900002d14f65f72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐3】已知
,
.
(1)设
,若函数
是单调函数,求曲线
在点
处的切线方程;
(2)设
,若
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38716f6e23267264de62d5a873fef936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9154514e9d2a5b3e3eaa508adabbaa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a020607e7478fc091525240b0580b37.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c0a974c6dbd1b25e99411faec3732f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c77f150cdda10a586d2e33af181f9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐1】设函数
,其中
.
(1)若
,求曲线
在点
处的切线方程;
(2)若
,
①证明:函数
恰有两个零点;
②设
为函数
的极值点,
为函数
的零点,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49aa5f48add0880006ac46f62286fd28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9fdd2e38a61463831412e20f5e4184.png)
①证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](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/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64df36fd0b37b72d36fe21e10f5d67f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14d1f530d7e04ed208421a6078d2c7c7.png)
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解题方法
【推荐2】设函数
.
(1)求函数
的极值点个数;
(2)若
,证明![](https://staticzujuan.xkw.com/quesimg/Upload/formula/261899da1427bf0c789533692c18adb0.png)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c079958a40ff393b2cc42f7d59134f9.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0b2f7d6d1526991c409760c60884de1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/261899da1427bf0c789533692c18adb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/549afbbeb3d75c77db607d4cc6a6bd61.png)
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