已知函数
的定义域是
,对定义域内的任意
都有
,且当
时,
.
(1)证明:当
时,
;
(2)判断
的单调性并加以证明;
(3)如果对任意的
,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac90ddf58188261dc6746e722766942b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b23478a1fcd7ba7a2a7adc61f20b1d6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca542e78b7d77d008c9c4752afa91a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(1)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)如果对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d784349bae06883e4db09df4e4a08f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51cafdd61711bf19706be7b06135c77b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
20-21高一上·重庆沙坪坝·阶段练习 查看更多[5]
重庆市青木关中学2020-2021学年高一上学期12月月考数学试题(已下线)专题05 抽象函数黑龙江省哈尔滨市第九中学校2022-2023学年高一上学期10月考数学试题(已下线)专题3-6 抽象函数性质综合归类(2) - 【巅峰课堂】题型归纳与培优练河南省济源市高级中学2023-2024学年高一上学期11月月考数学试题
更新时间:2022-04-09 11:06:08
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解答题-问答题
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适中
(0.65)
名校
【推荐1】已知
是定义在
的奇函数,且
,若
,且
,有
恒成立.
(1)判断
在
上的单调性,并证明你的结论;
(2)解不等式
的解集;
(3)若
对所有的
,
恒成立,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417ab20883d799aaf311371393fa7d7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87cd4403487962c38c8707ba3ab3fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a547418f2bc38da0091f1a4a482fa5b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96bc2eeaca8a8ce4bcce2bff011a11bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d01645cf54dd71aa3d55f8f40c9bdaf.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
(2)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2bce9a06ecdb5977187f8378436a58.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a97087acd5f4a7c147c9ef41e67849a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66f0ca536621ec8db02707ba65917029.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/262d7da8f17131eef23addd1854b170d.png)
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【推荐2】已知函数
满足对一切
都有
,且
,当
时有
.
(1)求
的值;
(2)判断并证明函数
在R上的单调性;
(3)解不等式:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d200a7afe1e011713e14886a6887e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03094eee75cad78d50cf8268a6900b48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/196be101149acfb6a6c4ceca7fc96828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b530377e3fe56b7988935dd73d9dccd.png)
(2)判断并证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)解不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c9bcac4b8290172c9a80a1b24cb98c6.png)
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【推荐1】中欧班列是推进“一带一路”沿线国家道路联通、贸易畅通的重要举措,作为中欧铁路在东北地区的始发站,沈阳某火车站正在不断建设,目前车站准备在某仓库外,利用其一侧原有墙体,建造一面高为3m,底面积为
,且背面靠墙的长方体形状的保管员室,由于保管员室的后背靠墙,无需建造费.因此,甲工程队给出的报价如下:屋子前面新建墙体的报价为每平方米400元,左右两面新建墙体的报价为每平方米150元,屋顶和地面以及其他报价共计7200元,设屋子的左右两面墙的长度均为x m(
).
(1)当左右两面墙的长度为多少米时,甲工程队的报价最低?
(2)现有乙工程队也参与此保管员室建造竞标,其给出的整体报价为
元(
),若无论左右两面墙的长度为多少米,乙工程队都能竞标成功,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8382d1482fe9cbc0c9a6931b26e3294.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211ebd58d457c6e7855cef475a91f203.png)
(1)当左右两面墙的长度为多少米时,甲工程队的报价最低?
(2)现有乙工程队也参与此保管员室建造竞标,其给出的整体报价为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/443d5b666921f44799d94f385d788f1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
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【推荐2】如图,一幅壁画的最高点
处离地面
米,最低点
处离地面
米.正对壁画的是一条坡度为
的甬道(坡度指斜坡与水平面所成角
的正切值),若从离斜坡地面
米的
处观赏它.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/25/a44a52cc-b862-43d6-8f00-5f206dc853f0.png?resizew=215)
(1)若
对墙的投影(即过
作
的垂线垂足为投影)恰在线段
(包括端点)上,求点
离墙的水平距离的范围;
(2)在(1)的条件下,当点
离墙的水平距离为多少时,视角
(
)最大?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d65e051e943ab28fa57aee2fb57994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb8f58755aee89fb2cf72ba518dcee2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/25/a44a52cc-b862-43d6-8f00-5f206dc853f0.png?resizew=215)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)在(1)的条件下,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
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【推荐1】已知
对一切实数
都有
,当
>0时,
<0.
(1)证明
为
上的减函数;(2)解不等式
<4
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://img.xkw.com/dksih/QBM/2015/3/6/1571992589991936/1571992595857408/STEM/f22767ca55ab476898a575565c1161f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0c421cb1648073f763e3e71358e1b3b.png)
![](https://img.xkw.com/dksih/QBM/2015/3/6/1571992589991936/1571992595857408/STEM/2110f7ccaba945b480da76dbe844427b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://img.xkw.com/dksih/QBM/2015/3/6/1571992589991936/1571992595857408/STEM/ae82d4baf8f24964afd2d60fcc16eebe.png)
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【推荐2】已知定义在
上的函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a5877b36b0def7389b8fb66e8491644.png)
(1)证明
是增函数;
(2)解关于
的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc30165c18de623d0a3efb961e606d1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a5877b36b0def7389b8fb66e8491644.png)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d06da5f9311195b66c3e8d1ecb90df3f.png)
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【推荐1】函数和
具有如下性质:①定义域均为R;②
为奇函数,
为偶函数;③
(常数
是自然对数的底数).
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)对任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15f7a0971ccb6c1aeab5486bb4d8cc6a.png)
(3)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69f7db3d06a5fa828fb433aaf987bd60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3197f8f377c5665d9d67e73949a02dc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解答题-证明题
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【推荐2】已知函数
的定义域是
,对定义域的任意
都有
,且当
时,
,
;
(1)求证:
;
(2)试判断
在
的单调性并用定义证明你的结论;
(3)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/938308ceead1a6a87920b457f4646f8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/309c99d0acad93706ab168d1f9c584bb.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c23eb89094be66dc8b8711e5fdb58a4.png)
(2)试判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
(3)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d0a60c52390a20157e60f33c93f75bc.png)
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