1 . 狄利克雷函数是高等数学中的一个典型函数:若
则称
为狄利克雷函数.给出以下四个命题:
①对任意
,都有
;
②对任意
、
,都有
;
③对任意
、
,都有
;
④对任意
,都有
.
其中,真命题的序号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4fde3ac3ec7c30775066efa6dd6f53e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
①对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/245e5c12f9f8d5b0741c72ec37c83f23.png)
②对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33890c6b0bf167514d44139d9dca0154.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a8c69aaecfbe4d8bd7cf01a3b79c50.png)
③对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33890c6b0bf167514d44139d9dca0154.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/768557188ce7320b00b58da03dbcb443.png)
④对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34e9794d31b207750914222a39d9036.png)
其中,真命题的序号是( )
A.①③ | B.①② | C.②④ | D.③④ |
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解题方法
2 . 若非空集合
,
,则使得
成立的所有a的值组成的集合是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4805a68b328ed81917d44ddfd73adf54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/246a88d56b4e4d33211f521c2d00286b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee119ade13857c93a4709eb72874daf2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
3 . 已知
且
.给出下列不等式:①
;②
;③
;④
.其中,恒成立的不等式的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eae9ba258299eb489b490594397e23c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54969adfe007f7dacf556c4c863670b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb54b1b3617ebc502cb44194cbcd1dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533cdd766fede0829067363e927bb834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89a02453451985554031da21ac70f3f0.png)
A.4; | B.3; | C.2; | D.1. |
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4 . 设集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5b85a491596da20cea34c1d67ca6445.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a05551b1d4b65f27a932c33ddb1cb6ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e60375f97ff7854f4d3a8b1108d2e3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5卷引用:河南省名校大联考2021-2022学年高三上学期期中考试文科数学试题
名校
5 . 某种药物需要2个小时才能全部注射进患者的血液中.在注射期间,血液中的药物含量以每小时
的速度呈直线上升;注射结束后,血液中的药物含量每小时以
的衰减率呈指数衰减.若该药物在病人血液中的含量保持在
以上时才有疗效,则该药物对病人有疗效的时长大约为( )
(参考数据:
,
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4515db92efe36f5c31b293bf80179ba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23466fd31d0666cb9f65dced41188359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4515db92efe36f5c31b293bf80179ba0.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be616a96322f068b503f276146dc9fca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7056859fa03d3fb3f8d33077e558bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4c35e0ecbf7130b158f7d16b7abe17b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07832a3f9c631b1ed3213bf67720f61a.png)
A.2小时 | B.3小时 | C.4小时 | D.5小时 |
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4卷引用:北京市大兴区2021-2022学年高一上学期期中考试数学试题
北京市大兴区2021-2022学年高一上学期期中考试数学试题(已下线)4.2 实际问题的函数建模-2021-2022学年高一数学课时同步巩固强化训练(北师大版必修1)北师大版(2019) 必修第一册 章末检测卷(五)函数应用福建省莆田市第一中学2023-2024学年高一上学期第一学段(期中)考试数学试题
解题方法
6 . 若
是定义域为
的偶函数,且当
时,
,则
的解集是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/862df674d5668eb2c8d67c889866463f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc4136bd17997e11a7f8abcb19f9018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd1fb07ef8ecf42454de4e5383412218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cebc25cdc2099579b66b861990abf535.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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7 . 已知幂函数
在
内单调递增,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ec1813124ef16a843c775ffbeef7b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
A.3 | B.![]() | C.3或![]() | D.-2 |
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解题方法
8 . 已知函数
(
,
),且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab21026bdca107e9d227995fd8b9e5.png)
![](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/54dc8d62189fae24a7c4a2a0325227c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ca697ec26c3fd90ed2b795ee57b70c7.png)
A.![]() | B.2 | C.1 | D.![]() |
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9 . 若全集
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a9a9779c1aa971c463447e664aacda8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abb23f97242d3c06508d1fad18fa9e46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715476727accc3c6b3c71f2f25c3aaad.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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10 . 已知
,
,若
,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b5d42dd1c31aefe53ca032ee667b0ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a501b09cd2b389c10565130f72b558e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64daa5399cafb5a3a4d9b0c831cc815.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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