解题方法
1 . 设函数
,则
是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f438eca2954862a6a7dc020ffeb1e9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
A.奇函数,且对任意![]() ![]() |
B.奇函数,且存在![]() ![]() |
C.偶函数,且对任意![]() ![]() |
D.偶函数,且存在![]() ![]() |
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解题方法
2 . 已知函数
设
,若关于x的不等式
在
上恒成立,则a的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926b3efbf99f3cd3534cb8af160d70cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d01155851d4ed51e8c6e65eb668df84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2023-08-27更新
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9卷引用:山西省晋中市部分学校2022-2023学年高一上学期期中联考数学试题
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3 . 已知
且
,若集合
,
,且
,则实数a的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/321846a971dff65f9fe62f289a98b975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cde61e26e97b0226209d795d66b29d92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2023-04-01更新
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1037次组卷
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3卷引用:湖南省岳阳市2022-2023学年高一下学期期中数学试题
22-23高一·全国·阶段练习
解题方法
4 . 已知函数
,若
,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7a0d8e25c00df3701e33a34140db950.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a840c593c0160c93e4d307b1325eb17e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 已知
,若对于任意的
,都有
,则实数
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3098505725596f1c4dd98ce0353fedd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01b6fb6a1c7a895df528382a5583444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4e4b3aeae55d7f9c57b175fb990a5cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2022高三·全国·专题练习
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解题方法
6 . 若不等式
对一切正数
、
恒成立,则正数
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ad4fbd29891f4ce65f01189bd156c5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.1 | B.2 | C.![]() | D.![]() |
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7 . 定义在
上的函数f(x)、g(x),
,若对任意
,存在
,使得
成立,则称
是
在
上的“追逐函数”.已知
,下列四个函数:①
;②
;③
;④
.其中是
在
上的“追逐函数”的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57edfe4ff10b0b1cac4a5f9208c4d359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1597d5afa293403d63f074adb07cba9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/208575de4f7422c995dd601c54d264d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249d2563fa570a9403b52d30d98da22c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57edfe4ff10b0b1cac4a5f9208c4d359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318a16f1950d06e5500c76d8f81a507f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/253893d2bf2b944a6de271463c3e7929.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f422d25cce8b6b1275f1387f0e2c4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/078d5da73e5aa679bc163820b7b73f9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4af34d22101aa2ec7499fddd8f71e21a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03db4ea1dcb63b22cf4e917df5db581e.png)
A.① ② ④ | B.① ② ③ | C.① ④ | D.① ② |
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解题方法
8 . 若函数
在定义域内的图像上的所有点均在直线
的下方,则称函数
为定义域内
的“下界函数”.若函数
为定义域内
的“下界函数”,则
的最大值减去
的最小值等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4ff39dd1dfc9caf911ad0d11ba21d66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec9d212b0337b390db8dae42593e7e77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bda9c1be7da4d3b188de03d11660917c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
A.2 | B.3 | C.4 | D.5 |
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2卷引用:江西省景德镇一中2021-2022学年高一(18)班下学期期中考试数学试题
20-21高一·江苏·课后作业
9 . 复数z=a3﹣2a+(m+a)i(a≥0,m∈R)的实部大于虚部,则m的取值范围为( )
A.(﹣∞,﹣2) | B.(﹣2,+∞) | C.(﹣∞,0) | D.(0,+∞) |
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解题方法
10 . 已知数列
的前
项和为
,
,
.若对任意
,不等式
恒成立.则满足条件的实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b75dbb20178da2eec9ff11a9c74e841.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd0f044dc82a12fd1c71872f2ac12d06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def5f486eb8a9f88a038d717b9f4127c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3卷引用:四川省南充市白塔中学2020-2021学年高一下学期4月月考数学试题