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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7日内更新
|
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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
名校
解题方法
2 . 对于定义域为
的函数
,若存在区间
,使得
同时满足:
①
在区间
上是单调函数;
②当
的定义域为
时,
的值域也为
,则称区间
为该函数的一个“和谐区间”
已知定义在
上的函数
有“和谐区间”,则正整数k取最小值时,实数m的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235b69c35a633494664799f642cf47bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca6d68f1de3e70696f1d5d60affe6ef.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca6d68f1de3e70696f1d5d60affe6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca6d68f1de3e70696f1d5d60affe6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca6d68f1de3e70696f1d5d60affe6ef.png)
已知定义在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/590e9b355752da576aa7f628315e6c82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ef658ba0fcda37d15e46fbde0ff0199.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
3 . 若关于
的方程
有两个不同的实根
,
,且
,则实数
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/529486e4a752b00da43865f01155bc38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/322c41fdd11ebee5060a2d45259c785e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
解题方法
4 . 已知
是函数
的零点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826af4309092a0e5caafa70546720ec0.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2024-04-16更新
|
306次组卷
|
2卷引用:云南省祥华教育集团2023-2024学年高一下学期5月联考数学试题
5 . 设
,函数
,若函数
恰有3个零点,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ffae6162b2198437e1cb77ae36193ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276b142a9d9f0a87425a668dd6501f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 已知函数
,若函数
恰好有两个零点,则实数
等于________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5e9cf4f0029b5d69181dd555194aec6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/948cbdf31bff9103474644feb9c78221.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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名校
解题方法
7 . 设O为坐标原点,定义非零向量
的“相伴函数”为
,
称为函数
的“相伴向量”.
(1)设函数
,求函数
的相伴向量
;
(2)记
的“相伴函数”为
,若方程
在区间
上有且仅有四个不同的实数解,求实数k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b84dac41f87e939f6cc39f38dc59b78d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b0e4e35cf9b9f97c19e4b72cc2a1b09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b84dac41f87e939f6cc39f38dc59b78d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abc54bc56c16baa3643686b85a6130e4.png)
(1)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15530d256df9ecf36c7476381c7ab3b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e723e57753f0a4fe1ef8ca1aee0e2117.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3fa5a2ec0f43acc49c5f7f848f212c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/227e04b76330c7bc1f7b62a1756cd5a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b604c6522119e77c1cb16b91532a2c1.png)
您最近一年使用:0次
2024-03-31更新
|
344次组卷
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2卷引用:云南省下关第一中学2023-2024学年高一下学期5月期中考试数学试题
8 . 已知函数
.
(1)若
的定义域为
,求
的定义域;
(2)证明:
有且只有一个零点
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b879f93babf292763dd1ee52f4d2c4d1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2ec965488c7e1cea085463c7731285.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5872abdb3911443a2090f0e95e442447.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48824632c5ca0107f0ca4fc4bd12de11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab4efc8f466b7f221d919f927dde5141.png)
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名校
9 . 已知
是函数
的一个零点,
是函数
的一个零点,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0878c361279685ecd96f4051a0b361cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dc5882b90401b5d90e4ac859eb3f8ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28b6ab702f8e93cc1e680a7d7af06786.png)
A.1012 | B.2024 | C.4048 | D.8096 |
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10 . 已知函数
对一切实数
,都有
成立,且
,
其中
.
(1)求
的解析式;
(2)若关于x的方程
有三个不同的实数解,求实数k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/587d3909a3d586e11cd3e902066976d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80fae86b38bf45a6ddf9986a7ce6b2a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/196be101149acfb6a6c4ceca7fc96828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7220590606af8fd2cce75eb84d720ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ac1b64cb76717bd87cd068fbaf1cf6c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)若关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fdc09bc9e98f39d2019c114ee666b10.png)
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