解题方法
1 . 定义
为不超过
的最大整数,如
,
,
,
.已知函数
满足:对任意
.
.当
时,
,则函数
在
上的零点个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf0a57f7f19bd5919e98bf0414fe850.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/906d56fc8fcf6f56671376f442f429ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d54a0e82778f606d95a486835ac9f56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3420606c96b68fb884c839923fd20a25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/322eb46d949b9580bcc057d146b7fc58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790daaa89fc9d093f45023becf765697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3262781afb71e9dffc0b7fa1fe280cb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a31d2ac74f76e68064b4a74470d98b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8254a9fe09d5e3940ad8c1c1c62c105c.png)
A.6 | B.8 | C.9 | D.10 |
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2024-06-17更新
|
173次组卷
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2卷引用:云南省部分校2023-2024学年高一下学期月考联考数学试题
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解题方法
2 . 已知函数
,下列关于函数
的结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d3efb1feed2815caaa26845073859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
A.![]() | B.![]() ![]() |
C.![]() | D.![]() ![]() |
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3 . 已知定义在
上的函数
,若存在实数
,
,
使得
对任意的实数
恒成立,则称函数
为“
函数”;
(1)已知
,判断它是否为“
函数”;
(2)若函数
是“
函数”,当
,
,求
在
上的解.
(3)证明函数
为“
函数”并求所有符合条件的
、
、
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3897bf276a0b6c2121917d39b369df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d637d748a2b196af6d91703881ae1f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3897bf276a0b6c2121917d39b369df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67758380edd3796902534cf0e52cb6a1.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab466aedd6e176088d8dee7bc3e3aaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9697e701323f29c2b8fb4b69fdec2a50.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3897bf276a0b6c2121917d39b369df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/901a683d7456f2b2135bccb41e70e33d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bad324be3bebd9c8051c5f502df2b536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f51870c1132971c292e4498255210546.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4947f55ebd9b5438e46cb120d51be615.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966055559e213bce8e92ef59ba03d2d4.png)
(3)证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa79143526cf263a8fff8030446efa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67758380edd3796902534cf0e52cb6a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
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解题方法
4 . 设函数
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a26be5e70ebc666ef0fa971e3cf717.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f80a4834a90f44e99e1f4173ab9de9.png)
A.6 | B.9 | C.12 | D.15 |
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解题方法
5 . 已知函数
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f164928276c4bb4b90a61b40facabf37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d470408c1038d0ac6df442fec3df9af1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-05-08更新
|
542次组卷
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2卷引用:浙江省浙南名校联盟2023-2024学年高一下学期4月期中联考数学试题
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解题方法
6 . 已知函数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71599cd707909eb30d2a54be7f8c966.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a01a3d2223f0441ac6fee6c582bcabd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71599cd707909eb30d2a54be7f8c966.png)
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2024-05-02更新
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3卷引用:湖南省长沙市明德中学2023-2024学年高一下学期期中考试数学试卷
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解题方法
7 . 已知函数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33e3f5b6e5743e9b894d2c801e4b98fd.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49ddd6b15b9f4b086376e88313a6ba52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33e3f5b6e5743e9b894d2c801e4b98fd.png)
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解题方法
8 . 如图,已知
是边长为
的正方形
的中心,质点
从点
出发沿
方向,同时质点
也从点
出发沿
方向在该正方形上运动,直至它们首次相遇为止.已知质点
的速度为
,质点
的速度为
.
表示为时间
(单位:
)的函数______;
(2)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd6f4250ca6b1b9bce234a01f00d44d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20c8119fa3ded1d2846e246e17925c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4853b4705dee3de86e18a346ee3ae853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc2d9b900111188aca83126dff97f32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b9174c3b1324cf81098e42e0480bcc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be21181bd3565fa189297834c1f1e450.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65502a7ea4d1ce6d6d8c720845c73e0.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be21181bd3565fa189297834c1f1e450.png)
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2024-04-18更新
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2卷引用:山东省济宁市育才中学2023-2024学年高一下学期4月月考数学试题
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9 . 德国数学家狄里克雷(DⅠrⅠchlet,PeterGustavLejeune,1805-1859)在1837年给出了这样一个函数
,这个定义较清楚地说明了函数的内涵:只要有一个法则,使得取值范围中的每一个
,有一个确定的
值与之对应就行了,不管这个法则是用解析式还是图像、表格等形式给出的.这个函数常称为狄里克雷函数.关于狄里克雷函数
的性质,下面的表述中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3992bc7a3fcc8fa5ea17faee0d1c05a.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/8238fba9b391d01ceb071e78ee221035.png)
A.![]() |
B.![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
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10 . 已知函数
,且
.
(1)求
;
(2)若
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72d469ce65946f01efaa25b4a317c678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dec65a2bec3d4296c613a80b3ae41d5e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caa16aea6803864cc915c63e8ee9936c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a73b85378c1f65d0ca0e4c30a14ccee2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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