名校
1 . 已知函数
.
(1)若
在
上不单调,求a的取值范围;
(2)当
时,记
的两个零点是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
①求a的取值范围;
②证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c565eed01da8f81dcb33909bd65d16f1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7dcdd87d593df4a5c5e98d47fe1cfa6.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
①求a的取值范围;
②证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93b6f58e3f5d77e2acad79e7656688c6.png)
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2020-07-04更新
|
752次组卷
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2卷引用:浙江省宁波市宁海中学2019-2020学年高二(创新班)下学期高考模拟数学试题
名校
解题方法
2 . 若数列
满足
,
,记数列
的前n项和是
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fab51121848ce166035ceab6f4e00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb9ed1d51c6126440c12cae718afec78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
A.若数列![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2020-07-04更新
|
898次组卷
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2卷引用:浙江省宁波市宁海中学2019-2020学年高二(创新班)下学期高考模拟数学试题
解题方法
3 . 已知函数
,
.
(1)若
恒成立,求a的取值范围;
(2)当
时,函数
的图像与直线
是否有公共点?如果有,求出所有公共点;若没有,请说明理由;
(3)当
时,有
且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ea400e6c5e28322f5b5c8f8522e1da8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(2)当
![](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/66d6e08526a91f8dfd160e7da2f92a3a.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859458471c86ae39e0cc42d2d960d03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ca13a93b5f401c0d39ba52b0cffcb0.png)
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名校
4 . 已知函数
.
(1)若
在
处的切线方程为
,求实数
,
的值:
(2)求证:当
时,
在
上有两个极值点:
(3)设
,若
在
单调递减,求实数
的取值范围.(其中
为自然对数的底数)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f51a43d6dd32a758e2d49f3ca3abe.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd4ec6c78bab05a5df3d9954a70846ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58153bf3fdc83363cb5a23a2740d3778.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301605e86e5a5e61a65c91cd3dd8b77e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe5853a3e36e55ccf04a974c6df2811.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac4bdfe0d1fbe72d6f7bb854ca59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579e2c39e6c0a640357e3b0ccd6f954a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0608c244cb58f0962dc36678c945036.png)
您最近一年使用:0次
2020-06-24更新
|
509次组卷
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4卷引用:2020届江苏省新海高中、昆山中学、梁丰高中高三下学期5月高考模拟数学试题
5 . 已知函数
有两个不同的零点
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
(1)求实数a的取值范围;
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69522949ceae0410c74465d170837210.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
(1)求实数a的取值范围;
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92cd9af362cd03aca8cc82a6c8491492.png)
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解题方法
6 . 已知函数
,
,若存在
,使得
成立,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b26f55c7c29644dfe0277d3e2adf10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9768e5e49425c11253db1c5098a6d2ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ffcfd6c758e227655646a0949a0956e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57fa9a938e6f518a7d117e8f3910b76c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ed4c84be6b7b803f9333fa6110c60f.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() |
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7 . 对于定义域为R的函数
,若满足:①
;②当
,且
时,都有
;③当
且
时,都有
,则称
为“偏对称函数”.下列函数是“偏对称函数”的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/104375baf5cef5eb92cfc7cf13b80193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f0e9c04402a0ffdaa25c3e3c82c7dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a2537ded5ff52585b9074f69b947945.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7b0c34c4a6e7be6f08ef7b7829c4b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e8008c9c6aa9dc8eebcf19014f3de60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/580c300d1699fc2145c914a0c99ae585.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2020-06-08更新
|
1668次组卷
|
11卷引用:福建省2019-2020学年高二年级6月联考数学试题
福建省2019-2020学年高二年级6月联考数学试题山东省济宁市嘉祥县萌山高级中学2020届高三第五次模拟考试数学试题广东省广州市执信、广雅、六中三校2021届高三上学期8月联考数学试题(已下线)2021届高三数学新高考“8+4+4”小题狂练(18)重庆市凤鸣山中学校2021届高三上学期10月月考数学试题人教B版(2019) 选修第三册 突围者 第六章 素养拓展北师大版(2019) 选修第二册 突围者 第二章 全章综合检测安徽省池州市贵池区2022-2023学年高二下学期期中考试数学试题(已下线)练习3 2021年高考数学二轮小题专练(新高考)(已下线)专题24 函数、不等式恒成立问题(测)-2021年高三数学二轮复习讲练测(新高考版)江苏省扬州大学附属中学2020-2021学年高三上学期1月阶段检测数学试题
解题方法
8 . 已知函数
.
(Ⅰ)求函数
的单调区间;
(Ⅱ)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed34e5dd611760952d22056001e6ddd7.png)
(Ⅰ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅱ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe51ff36b90d97a438924d0578187cc9.png)
您最近一年使用:0次
2020-06-08更新
|
740次组卷
|
2卷引用:安徽省合肥市庐江县2019-2020学年高二下学期期末数学(理)试题
9 . 已知函数
.
(1)若
.证明函数
有且仅有两个零点;
(2)若函数
存在两个零点
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c694d769c89852975bd3d733d9548135.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7f827fafdbbc59f42366efd30a9eab2.png)
您最近一年使用:0次
10 . 已知函数
,
.
(1)讨论
的单调性;
(2)设函数
,若
有两个零点
.
(i)求
的取值范围;
(ii)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/364c5ffcd655034ead54efed24874e72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fff97d054e39447e1ccc2e351fb28775.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15f706b63aa45669c057b3828ca158bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
(i)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(ii)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df3da00fe1feafb42d7e2254dd5f8589.png)
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