解题方法
1 . 已知函数
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/25/1ec0f96d-b602-4ded-9399-a2dc329aaf8c.png?resizew=248)
(1)当
时,画出
的图象,并判断直线
与
图象的交点个数;
(2)设函数
,若
对于任意
都成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd713819683b3ff3bfbd39a08878ee08.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/25/1ec0f96d-b602-4ded-9399-a2dc329aaf8c.png?resizew=248)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46111e4d12c21798aa213c0d7804c2ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f342cde790a2db591c2a7150b9261ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0632b67d3bfbf73e763124696892c36b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8437e8abf825302f7b7a07d3455e98d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
2 . 设函数
,
.
(1)作出函数
的图象;
(2)定义
设函数
,若存在
,使得
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cce427e97019745d570dd2728027fba5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7947e90131a62576fd2e1374a80665cb.png)
(1)作出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc83eadfc25a4cd56e5034eafc7249c.png)
(2)定义
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3109338f9af07320479ad9e0df32617d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f034d2f18bbe75526ff320f99730e056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6073fc52cd10164c1313dd96069b8d00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/631a8c987ce73cebd2d3b15e2524878c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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3 . 已知
分别是定义在
上的奇函数、偶函数,且
.
(1)求
的解析式;
(2)记
,且存在唯一
,使
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8fd1e808e015f4cb43d2e3a0529ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b41ae210dd892fc5428a51dd409aa69d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8fd1e808e015f4cb43d2e3a0529ac6a.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e79d6e360b086796bb0226461c713c2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acdc6e6a0e6584bea7deb91b0841fa28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6981b754747b3eb95a50cb9b390d13bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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4 . 已知函数
,其中
.
(1)当
时,画出函数
在
上的图象;
(2)若函数
在
上的最大值为
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3db58afeac1cfe83233a8887e16f59b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/4/2f6762bf-2a3f-42bd-a567-92f803b639f0.png?resizew=164)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a92ba8b43bebdf7d6c40917f4d3e110.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb87c830a03204a5b783ad4c2ba49c4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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5 . 已知
,
.定义
,设
,
.
(1)若
,(i)画出函数
的图象;
(ii)直接写出函数
的单调区间;
(2)定义区间
的长度
.若
,
,则
.设关于x的不等式
的解集为D.是否存在t,使得
?若存在,求出t的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df18da1ecd1a83afc4544ee71f00c56b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92fd3003a50fc4b754f134fe799b12a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25b6e7402f4f1369855b7b085a5d2ae3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/769ef52deedb5a708760656f9c26094c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31877fa2d6f8a70a5b9aeb1d8b59310c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/25/45865a78-4ce4-4fb1-b56a-26ab4f523167.png?resizew=169)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66884efff7400f92b530d69d029778d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b426608a06477f57cb994f4d00e4465d.png)
(ii)直接写出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b426608a06477f57cb994f4d00e4465d.png)
(2)定义区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a421dcdff3dff08169805bfa9743b6f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae6ef9c3a133abc84cce48028dc61c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ad8e44a8c7c4f7aed5e3829f9974a8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c155c7051a694bd792dce709111334.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72de315b1f39290021ef0f05349b25a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8ed2fb4a6389a9994694ba9aa5e6422.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d008aab3aadca7fb9ba7400f3121542.png)
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解题方法
6 . 对于函数
,函数图象上任意一点A关于点P的对称点
仍在函数图象上,那么称点P为函数图象的对称中心.如果
足够大时,图象上的点到直线
的距离比任意给定的正数还要小,那么称函数图象无限趋近于该直线
,也称直线
是函数图象的非垂直渐近线.
(1)研究函数
的性质,填表但无需过程:
(2)根据(1),在所给的坐标系中,画出大致图象,如有对称中心,则在图象中标为点P,如有非垂直渐近线,用虚线画出;
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/11/9666ea8a-c948-4c6b-87d0-fb09cc31a56f.png?resizew=288)
(3)由(1)(2),选择以下两个问题之一来答题.
①如果函数
的图象有对称中心,请根据题设的定义来证明,如果没有,请说明理由;
②请根据题设的定义,证明:函数
的图象在x轴上方,且无限趋近于x轴,但永不相交.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe916d05211cf74a2b1428a8bb8bbbbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)研究函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df7c3338bd45a8a412b672118e8aea7d.png)
值域 | |
单调性 | |
奇偶性 | |
图象对称中心 | |
图象非垂直渐近线 |
(2)根据(1),在所给的坐标系中,画出大致图象,如有对称中心,则在图象中标为点P,如有非垂直渐近线,用虚线画出;
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/11/9666ea8a-c948-4c6b-87d0-fb09cc31a56f.png?resizew=288)
(3)由(1)(2),选择以下两个问题之一来答题.
①如果函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
②请根据题设的定义,证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
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名校
解题方法
7 . 已知函数
.
(1)当
时,作出
的草图,并写出
的单调区间;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/97eaf42c-fe77-40e0-8d20-965fb6eadc65.png?resizew=271)
(2)当
时,解不等式
;
(3)若存在
、
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db5ff5998312236e8de3519e2c62125f.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/97eaf42c-fe77-40e0-8d20-965fb6eadc65.png?resizew=271)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f1a9ac58f9aaa0dd5d1e862948c0f78.png)
(3)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32aa4ee586754a3d6a1b2c7f0ed7384d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0023c0bde1dffd1e1b634bbd0013122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
8 . 已知函数
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/03c81a18-3d07-4815-9c44-580ce0ae3736.png?resizew=397)
(1)画出
的图象,并写出
的单调递减区间;
(2)当实数
取不同的值时,讨论关于
的方程
的实根的个数;(不必求出方程的解)
(3)若关于
的方程
的有4个不同的实数根,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f8ee9a78db19cdb2910f315889c0f13.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/03c81a18-3d07-4815-9c44-580ce0ae3736.png?resizew=397)
(1)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338316b0fe50fdea0f2f75aec4c990dd.png)
(3)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64df0b608e709e01d8648fcaee04b4f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2022-10-26更新
|
416次组卷
|
2卷引用:山西省晋城市第一中学2022-2023学年高一上学期第三次调研数学试题
名校
解题方法
9 . 已知函数
满足
,函数
是
上单调递增的一次函数,且满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/23/6ce63b98-53d2-429f-8456-4d507c4a0850.png?resizew=265)
(1)证明:
,
;
(2)已知函数
,
①画出函数
的图像;
②若
且
,
,
互不相等时,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9f6b132b0f8a8ce00642f297ab0e7a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/339b85cca0100adc23472c143f9a5a89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4191aed4e079966f89c12cc54a4dbbb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/23/6ce63b98-53d2-429f-8456-4d507c4a0850.png?resizew=265)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e5cb16179eee83ee4c01f1bd9b8371d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ee737b76b747390c423bec199aaf37c.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6e9e3ca0b965ebe07a3e11d7f2933b.png)
①画出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059d89c7d892826f42b6fc9b8f7f903b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2fdeba282b028321696be7f90f2cbfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3aa688caadfeb5bdf9c7dfecb5afa31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acb14e2fe3859d5aecf636054ee65d77.png)
您最近一年使用:0次
2022-10-20更新
|
677次组卷
|
3卷引用:福建省厦门第六中学2022-2023学年高一上学期阶段性检测数学试题
2021高三·全国·专题练习
10 . 已知函数
,如果关于x的方程
有三个相异的实数根,求t的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e40e838d7042f180c083d90cf5a828e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10b2f05895bbf6174539cee6a2388cc0.png)
您最近一年使用:0次