已知函数
.
(1)讨论
零点的个数;
(2)设m,n为两个不相等的正数,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e5f1af86772df9f9d8cb577923744cf.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设m,n为两个不相等的正数,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1719b1956db872c53574e8617f0571e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a196ff76aecb29e1e3a0d4e1e1197848.png)
21-22高三上·云南·阶段练习 查看更多[5]
云南省十五所名校2022届高三11月联考数学(理)试题湖北省“荆、荆、襄、宜”四地七校联盟2021-2022学年高三上学期11月联考数学试题贵州省毕节市金沙县2022届高三11月月考数学(理)试题(已下线)专题3-7 导数压轴大题归类:不等式证明归类(2)-2022年高考数学毕业班二轮热点题型归纳与变式演练(全国通用)(已下线)专题36 盘点导数与函数零点的交汇问题—备战2022年高考数学二轮复习常考点专题突破
更新时间:2021-11-28 21:43:12
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【推荐1】已知函数
,
.
(1)试讨论f(x)的单调性;
(2)若对任意
, 均有
,求a的取值范围;
(3)求证:
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bfe4547ff0a71d1a27a8388eaa12bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)试讨论f(x)的单调性;
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a173a1aa3c129af32230d1b762d659ae.png)
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(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e38a5aa055e0f44c5209a0b1efc9e3.png)
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【推荐2】已知函数
.
(1)求曲线
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处的切线方程;
(2)设
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb3b6c56aee4bb8a8131fd960415c745.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d100c22435a23e017cfe6f535379d3c.png)
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【推荐1】已知函数
,它的导函数为
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(1)当
时,求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/757c5dcecf68b4536ca8ab30f3f0dffc.png)
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(1)当
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(2)当
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【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d70598da015dc0ffe5383d76cc5a365.png)
(1)若曲线
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(2)若
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(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6274852e643a635e7340efa732edddc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ede78fd7ac619ea597856254bb5d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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(3)对任意给定的正实数
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【推荐3】已知函数
,
,且曲线
在点
处的切线斜率均不小于2.
(1)求证:函数
在区间
内存在唯一的零点;
(2)当x>0时,设函数
为
与
中的较小者,求使
恒成立的k的最小整数值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1742b797cca4f80278d90d8aae3d6214.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85811c435b85311257e08e9e7b7e479a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe7522a3f232bd0b7a7850ae674db43f.png)
(1)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa662f0273f0921c1fa4727f632395.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5265d99095b635f62c7915298ec0e963.png)
(2)当x>0时,设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b426608a06477f57cb994f4d00e4465d.png)
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