1 . 已知函数
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6cdff7b72915008ae12cefda07edaa.png)
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() |
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2 . 已知函数
,其中
表示
,
中的最大值,若函数
有3个零点,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b532b68bfc793ca4826283d97458ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f9304148d83a941b03402b65905eae2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c49ca8562b98657ca9c499093f7233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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3 . 若函数
有
个不同的零点
,则
.已知
,存在实数
满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efa8fd3cee77a050571cde1f98695051.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6929d693c7669fedd49ef8dfcefa5f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54d0f17d3997cb3cbdc15d7725c7bd71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/308a91e53a0d9e5e3bf93228e35b9ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/378e91eb422a1b6f25ff7af35ec47941.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7245a7c5ad26216cd604641f99d92de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8255d540afdd24f608ab7ec231cff469.png)
A.8 | B.-8 | C.16 | D.与实数![]() |
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解题方法
4 . 若函数
的导数
的最小值为0,则函数
的零点为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9ab2235d1d357546bf141b9940745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fbce581279f6772e52f94fbf6d20c76.png)
A.0 | B.![]() | C.![]() | D.![]() |
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5 . 已知函数
和
的定义域分别为
和
,若对任意
,恰好存在
个不同的实数
,使得
(其中
),则称
为
的“
重覆盖函数”.
(1)试判断
是否为
的“2重覆盖函数”?请说明理由;
(2)若
,为
,的“2重覆盖函数”,求实数
的取值范围;
(3)函数
表示不超过
的最大整数,如
.若
为
的“2024重覆盖函数”请直接写出正实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c296e45b84cf67a98939aa7334e7d478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3eddf991be37d25d033f78bd3511809.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d5df7922a4e98e8e07bf418dd48a7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe44a5aed663a9b61ef7355b38c77d0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95d1a18f254577a0ce74ceb27364b98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(1)试判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b96b909824873058aebdaa54f6c21ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10a264b8541eddc8ae86058de027d1a1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f246e5b05b68bb9fdeb12a319aa7136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa88c20e58953bba4ed04d3ce419df95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)函数
![](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/240ca781ffd5d55cc9b7dd551879ce65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4987dca9120f6a58139fd3e412ed77c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a899e901b141a0a6d56e3387ecf9f047.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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6 . 已知函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588653ae65ede4c581eaf57312a3b4d4.png)
A.当![]() ![]() |
B.当![]() ![]() ![]() |
C.若![]() ![]() |
D.若方程![]() ![]() |
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解题方法
7 . 已知函数
,
,若
有两个零点
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f98fc3ebd8871c2c959090a8d22e951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e10dce73bdc1d522ae7cb34805ed3d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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8 . 设函数
,若
,且
的最小值为
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c131d5e03e6d55645e10ae22fe69dbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bc98ed2d3e3d6b1bfad174fba4fe710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d6b90938d743a2a9e69033f71ddaeec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c2df754f77604928c25690dde22b753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 函数
的定义域为
,且满足
,当
时,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/322eb46d949b9580bcc057d146b7fc58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71bb7883ea87e6275472dbe14ee62357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/010c9c6a08c8a26cbb84b28062eced4e.png)
A.![]() |
B.![]() ![]() |
C.若对任意的![]() ![]() ![]() ![]() |
D.若函数![]() ![]() ![]() |
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10 . 已知
,其图像上能找到A、B两个不同点关于原点对称,则称A、B为函数
的一对“友好点”,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b747210fd6614f70a092dc7fde0ab7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
A.![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.当![]() ![]() ![]() ![]() |
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