名校
1 . 已知正数
,
,
满足
,则( )
![](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/262e895386f3baf3644859395cf7aa0d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 若
,使得
成立(其中
为自然对数的底数),则实数
的取值范围是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432328f9ec80fe18790b1e1643f2b13f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6835f7ef9083fe9eb827646a3c669d51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11204e2fb6e560bf7a4ca26eaebfc526.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2024高三下·全国·专题练习
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解题方法
3 . 已知函数
,
,正实数a,b,c满足
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff6838d84b68c6f0d3b93b196d9b08d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9f049a5f960728c60a909821b2404b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5007479ae7f8c4579c5b2e5e7686f125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/298c3d031a4cf648c73f7175024e4fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07e65b44589c531a91b46fed6d7745b2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 已知函数
,下列四个命题正确的是______ .(只填序号)
①函数
的单调递增区间是
;
②若
,其中
,
,
,则
;
③若
的值域为
,则
;
④若
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dde2a965644fb3271f5d1499a6d0f1a8.png)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e9cb0c55afd6604ca0a05b5e0ec6d26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bbb1af40cb43a243938534580b84559.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd45196ee60ef6f01c9c8f262777115c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f83fb225dae1f42c3eb8da461fe61b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca27cc54ca0332245f5167488daa3408.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6d1422d2776494cfd5e8ca695bc0e05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66a09145206ea1060dbba927a9d12569.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8974344dff2bc357c7e63b84dbd05517.png)
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解题方法
5 . 已知正实数
满足
则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aef6e9dfd58cfd234fa1be807fd5bb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80fd3e7d8b89e0aab95a769c2ec39c7.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-05-09更新
|
723次组卷
|
2卷引用:河北省保定市第一中学第八届1+3贯通班2023-2024学年高一下学期期中考试数学试卷
名校
解题方法
6 . 已知函数
和函数
的定义域均为
,若
的图象关于直线
对称,
,
,且
,则下列说法正确的是( )
![](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/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be3c1578b7486f0d902bfae647400467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a68d61a58d3a5cb875e6a5db10696f24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c604e54fb41e01bf1a0ac6ee332a7469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01bea8bf593f594c51fc7cc547482bee.png)
A.![]() |
B.![]() |
C.若![]() ![]() ![]() ![]() ![]() ![]() |
D.![]() |
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2024-04-18更新
|
705次组卷
|
2卷引用:河北省邢台市2024届高三下学期教学质量检测(一)数学试题
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7 . 已知函数
的定义域为
,且
,都有
,
,
,
,当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3c988d875438535244ee2b092a779b.png)
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac87434324956e4145e38ad92a1aa95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a976d91358362fa49d6da8021fd47e2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b6b863364b72463ff435f44535abde4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8479c434c830cdb71e2b2ddabd197a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86334a5323b66e5bbb912eba81e52b2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32358560bd0832ecc0e7257203e1be15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77538bd3aba1864f5eac30dae75b36d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3c988d875438535244ee2b092a779b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953bbf77a2c58b4ba69ca9ad11e3a7e.png)
A.函数![]() ![]() |
B.![]() |
C.![]() |
D.函数![]() ![]() |
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2024-04-15更新
|
1359次组卷
|
3卷引用:河北省沧州市盐山中学等校2024届高三下学期一模联考数学试题
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8 . 已知函数
,下列四个命题正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dde2a965644fb3271f5d1499a6d0f1a8.png)
A.函数![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
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解题方法
9 . 信息熵是信息论之父香农(Shannon)定义的一个重要概念,香农在1948年发表的论文《通信的数学理论》中指出,任何信息都存在冗余,把信息中排除了冗余后的平均信息量称为“信息熵”,并给出了计算信息熵的数学表达式:设随机变量
所有可能的取值为
,且
,定义
的信息熵
.
(1)当
时,计算
;
(2)若
,判断并证明当
增大时,
的变化趋势;
(3)若
,随机变量
所有可能的取值为
,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fb970ba8fcfba34f395c51a06cd7e12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13b75064ab9e4b536e919f732f9a62eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/449a066c87681f1f006aef2faeeba4c6.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87b351f16728b0023fd63678f8103c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a8bb9552579e3cd3c7d693ce37b445.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/996bf49c1c961993315a9ea4e77a574f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a8bb9552579e3cd3c7d693ce37b445.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a8b321340d087a12ebaae4c594926e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a829fdd8ec0f3b7ede883cf2c3e53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc6c18eaf2f4309e6a014a1100c2380f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4525056307ec5148b17cb8e3da7d3114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae2695e6c7830bbdb9af3131ee9baf07.png)
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解题方法
10 . 已知
是定义在R上的偶函数,当
,且
时,
恒成立,
,则满足
的m的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d44984ab5340c6ca3feeeb4433620e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c28967904a688343761d856a8c29d55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bce4d2d47cec9d1abd96f12a2c6ab5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a176946b27d0208bc89d92cf1575a6bf.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-03-06更新
|
764次组卷
|
4卷引用:河北省保定市第一中学第八届1+3贯通班2023-2024学年高一下学期期中考试数学试卷
河北省保定市第一中学第八届1+3贯通班2023-2024学年高一下学期期中考试数学试卷辽宁省名校联盟2023-2024学年高二下学期3月联合考试数学试卷(已下线)第6题 函数性质图象联手,函数不等式对策多(优质好题一题多解)(已下线)专题10 对数型函数恒成立