名校
解题方法
1 . (1)解不等式组
;
(2)若不等式
对
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fabc69ba02793ce682105806a7c4b42.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cce4e46b4286bd43e3ad3312ece637c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e541ea2f855f981c96207070683d388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
解题方法
2 . 设
.
(1)若不等式
对一切实数x恒成立,求实数m的取值范围;
(2)在(1)的条件下,求
的最小值;
(3)解关于x的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab21274f0a4c68000ffd70abbc0b64d.png)
(1)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e59bb4bf2e0698d876cf815362b3658.png)
(2)在(1)的条件下,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9aaa48c24bcd35f215d27adcb5d00f1.png)
(3)解关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c0243e9dd6621e4d7c2eccc1bc3caf6.png)
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名校
解题方法
3 . 已知函数
.
(1)当
时,求关于
的不等式
的解集;
(2)
,关于
的方程
在
总有两个不同实数解,求实数
的取值范围;
(3)若
在区间
上恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ede4a660ea4ec1bac8834a388f54a69.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4abca1cd298c31bf8c0babfea7074d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60c885198ab1a7a342aa35ced7461b16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4cbc7b067862a3d9c6789b392fc068.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ec0a04d44656bd8b58d19afabbf235.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d6243e93c41978871cb23d8e66148d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2024-01-01更新
|
415次组卷
|
2卷引用:黑龙江省齐齐哈尔市克东县第一中学2023-2024学年高一上学期12月月考数学试卷
4 . 已知函数
,其中
.
(1)当
时,求函数
,
的最小值;
(2)解关于
不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7907e8be70c47759be0e604205602e7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc7449f60f359412bf73415c684cb636.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790daaa89fc9d093f45023becf765697.png)
(2)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2496a3da65447ec582d9d92a45db8a52.png)
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名校
解题方法
5 . 已知函数
.
(1)若关于
的不等式
的解集为
,求
,
的值;
(2)当
时,解关于
的不等式
;
(3)当
时,关于
的不等式
在区间
上恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60e411a0c9657143f9a13ff2d473a2c.png)
(1)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a57458464618fcf619375a93d3c66d69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e433d8cb4c0416cc82aac3b5d2bcdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2ec965488c7e1cea085463c7731285.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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名校
解题方法
6 . 某天,你突然发现黑板上有如下内容:
例:求
,
的最小值.
解:由平均值不等式:当
、
、
时,
恒成立、当且仅当
时取等号,得到
,
于是
,且等号当且仅当
时成立;
所以当且仅当
时
取到最小值
.
(1)请你模仿上面例题,研究
,
的最小值;
(2)研究
,
的最小值;
(3)求当
时,
,
的最小值.
例:求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fdeab5596a40458d6cb084e3b78bdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4cbc7b067862a3d9c6789b392fc068.png)
解:由平均值不等式:当
![](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/d93934994e8639a08faafb29251335e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/529b18236d8040085fea20d0bdb60c66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44acc0ee22dc4b7750e8be825e7c1355.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf4cf6e09ed07cf63be5a4b053501874.png)
于是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/740a20f7ea4b56b0bf9af4790f014fd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
所以当且仅当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fdeab5596a40458d6cb084e3b78bdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
(1)请你模仿上面例题,研究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaaa68dbc4683015c702079ecd3fdf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4cbc7b067862a3d9c6789b392fc068.png)
(2)研究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28cceadb75c7034f8a857f8ffe1cc28d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4cbc7b067862a3d9c6789b392fc068.png)
(3)求当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0389f042b047855f37c9c03a63b6e0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4cbc7b067862a3d9c6789b392fc068.png)
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名校
解题方法
7 . 已知函数
,其中![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)解关于x的不等式
;
(2)若
的解集为
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/650f1997d6848622400a2c03f98e0400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)解关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6acb0f1ac694dd177e99fc385f23318.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c27380616573e306aa5d96ed00333440.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba7204f43679af6935e494c59d40c6ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9c642d2895aa532c0a833ec0c6045f.png)
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2023-12-20更新
|
340次组卷
|
2卷引用:黑龙江省哈尔滨市黑龙江实验中学2023-2024学年高一上学期第二次阶段考试数学试题
名校
解题方法
8 . 已知二次函数
.
(1)若
的解集为
,解关于
的不等式
;
(2)
恒成立,求
的最大值;
(3)已知
,若
对于任意
恒成立,并存在
,使得
成立,求
的最小值及取到最小值时
和
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331d5e308cd5469e0f28a8d75f79903f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddd466faa4d2bdd1a4e9f8edf84c0c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b03f81246769936154d50d832366d.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd0a333207899260651d3f1333dbd972.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f79b59f2dd744abaffdc8cb9c1ceb53d.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe7b21c45031b3b951f9f09cba0a024e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f07ad90ca228230b03f12eb48ee0c1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/017e6e26ce02c89166e87a2a7c9399e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2adf751c67f525b5738c44b4cf02d4a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
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解题方法
9 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7abe4c4c0f6c1e61384a03c6658d0be.png)
(1)当
时,解关于x的方程![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99eaeb2ab68a49074d623ffca072fed8.png)
(2)若函数
是定义在R上的奇函数,求函数
的解析式;
(3)在(2)的前提下,函数
满足
若对任意
且
不等式
恒成立,求实数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7abe4c4c0f6c1e61384a03c6658d0be.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ada8982dbadf4e512f447f6293133334.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99eaeb2ab68a49074d623ffca072fed8.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)在(2)的前提下,函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27026cd5de1a456f9793c4e501c702ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7817fbdb25a683d107e0210c89985638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5894bb4764307b17fc72e430262c2f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cf10c55340c16450cdc1c809fd328ab.png)
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2023-11-13更新
|
1299次组卷
|
2卷引用:江西省宜春市上高二中2023-2024学年高一上学期第三次月考数学试题
10 . 已知函数
.
(1)若
的解集中包含4个整数解,求a 的取值范围;
(2)若
,且关于
的不等式
的解集是
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f791b213f19360ad965bff1fdb2e9bbe.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/701ae73f74efd1d616f76db5eb6a4afe.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3979919f2938a67fcb5d913c18d4bbad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27e62ba44cbfec6823ebc1f0c7457fb.png)
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