1 . 已知函数
(a∈R).
(1)讨论y=f(x)的单调性;
(2)若函数f(x)有两个不同零点x1,x2,求实数a的范围并证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aed49f4f2ad72e2dd645112d7c897c2c.png)
(1)讨论y=f(x)的单调性;
(2)若函数f(x)有两个不同零点x1,x2,求实数a的范围并证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/201afa8aad65c94089aa0524ab4c9965.png)
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2019-09-21更新
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2卷引用:安徽省安庆市2018-2019学年高二下学期期末理科数学试题
名校
解题方法
2 . 已知函数f(x)=(mx﹣1)ex﹣x2,若不等式f(x)<0的解集中恰有两个不同的正整数解,则实数m的取值范围( )
A.![]() | B.![]() |
C.![]() | D.![]() |
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2019-09-21更新
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7卷引用:安徽省安庆市2018-2019学年高二下学期期末理科数学试题
名校
3 . 设函数
.
(1)若
为定义域上的单调函数,求实数
的取值范围;
(2)若
,当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d9ded1572325b271cc2b2c6e22108b1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6cd65d86196cbf8d1ffdaf4e79a3fe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f5f7a36e251bbc424ccc127ebb2881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b17af43cc460a6a7010d51a0c9403d67.png)
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4 . 已知
.
(1)求证:
恒成立;
(2)试求
的单调区间;
(3)若
,
,且
,其中
,求证:
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da20d9fa9933597e7c65313baea66fee.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67fc0eabbe4910985f7462f8f8e4e077.png)
(2)试求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cfb19f0c37a72b33083ae9319f11a74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9645bd4d2002993b90ec6d48f9c04f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32e2f964bb664deba92b0f9ea5f0d85.png)
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5 . 已知
.
(1)讨论函数
的单调性;
(2)若函数
恰有两个不同的零点,求m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211b5f0d49de086437aaecdbe5b69819.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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2卷引用:安徽省合肥市2019-2020高三零模数学(文)试题
6 . 已知函数
,
.
(Ⅰ)当
时,求
的单调区间与极值;
(Ⅱ)当
时,若函数
在
上有唯一零点,求
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84563eedbb87514d47a8f7e78d8c3737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf039c46a25e331446c6ee1e9af3c82.png)
(Ⅰ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1d86b4ad722d7b720603eba9d330fd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fff6e7e2b9f2b68b1647f6350b98dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/000619eee3a844042680ccca829e3c06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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3卷引用:陕西省咸阳市2018-2019学年高二下学期期末教学质量检测数学(理)试题
7 . 定义在
上的偶函数
满足
,当
时,
,则函数
在
上的零点个数为__ 个.(其中
为自然对数的底数,
…)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3288dacc41f9f27c6fc497cee6d97a77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fafb877039758ee48b23a3df7b7ec31b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d018337b5b2dc4446d89af78c19aea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b436fbe50f645d7d7008d1634b9b5aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1daa67de3b8971d54ced0cac0cd11f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9405dfcca25b76af059fb4c308983eae.png)
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8 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2d6dee591e17a03614513482faf3a.png)
当
时,讨论
的导函数
在区间
上零点的个数;
当
时,函数
的图象恒在
图象上方,求正整数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2d6dee591e17a03614513482faf3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3a34d6f60032718820c3da2b07786b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33770cd4511e0f50f2d959ffd913e97f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84a7a4a037a4dfe973f1eb683d93d799.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d28ee67a0e2b2876b76e05fa98f85daa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b74381f68eb1e33d412a7a3d62313f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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9 . 函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/519843a1ae0a6f2f83be491774af97a3.png)
(1)若函数
在
内有两个极值点,求实数
的取值范围;
(2)若不等式
在
上恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/519843a1ae0a6f2f83be491774af97a3.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24aa16b780156e18f12baa2b8ee0f9a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e2405c4822bceae1cf191edb502d3b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f7dbb416ec1ff1984a724a4f48bf692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
10 . 已知函数
.
(1)求函数
的极值;
(2)设函数
.若存在区间
,使得函数
在
上的值域为
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ca5b361f71989ffadf5a8a4b17e09f7.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c532b5af7b88f1c21a7584cfac5fea6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ab657b99781fe5261087e2d04620efc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b85a97933a1d984f6e484b4021c800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2a63f9c2e9ae504dc82b5a0f67cc459.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2019-09-19更新
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2卷引用:安徽省三校2018-2019学年高二(下)期末数学(理)试题(六安二中、霍邱一中、金寨一中)