解题方法
1 . 已知函数
.
(1)当
时,求不等式
的解集;
(2)若不等式
对
恒成立,求实数a的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995e2474f312e53340f0570178a26008.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af7e5cd65bc9d3051c2c72311ca8f88d.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed408d3a43e0c6f6939b87346ea308c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb099907c15816b4b329715e80aea70f.png)
您最近一年使用:0次
2 . 选修4—5:不等式选讲
设不等式
的解集为
, 且
.
(Ⅰ) 试比较
与
的大小;
(Ⅱ) 设
表示数集
中的最大数, 且
, 求
的范围.
设不等式
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572034109767680/1572034115624960/STEM/73509d50fff34c21bbee1942a82be296.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572034109767680/1572034115624960/STEM/461d97b1c53d44f5a508cabeea525c1c.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572034109767680/1572034115624960/STEM/2e891618a7e04d92b63e244f34fdeb64.png)
(Ⅰ) 试比较
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572034109767680/1572034115624960/STEM/d7710fcc9dc84eb1adfe2d7d41e9cd17.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572034109767680/1572034115624960/STEM/897a5b3ec5a04a70b715776bbb5190c2.png)
(Ⅱ) 设
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572034109767680/1572034115624960/STEM/273d4c84d04648d8ba6f6f39695c5bbd.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572034109767680/1572034115624960/STEM/1f8c4b4d87a0411db1b5a18b36e1e956.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572034109767680/1572034115624960/STEM/88a032c8f9824b7aa8e1962dab27211f.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572034109767680/1572034115624960/STEM/a95bedf3cc9940e0befb881c08e0866d.png)
您最近一年使用:0次
名校
解题方法
3 . 已知函数
.
(1)当
时,求不等式
的解集;
(2)若
的解集包含
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b29599b9456822d1fbc6fdb43922c291.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2608a57caffde627dbf140ca22a2ff8a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/810e8fa5cf17ae94a41803772c488726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1279ef84071f5ad7c4c1681357edd84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-12-20更新
|
144次组卷
|
3卷引用:江西省赣州市信丰中学2020-2021学年高二下学期第二次月考数学(文)试题
名校
4 . 已知函数
.
(1)若
,求不等式
的解集;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e10b7b208d3fe7ae4321f8fc39ffc27d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25a1b197f5c9a0283567c83a4225a447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04bbcc3eb28e550b30e7ba6eaa09fe8f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b191937b1ebee34e654971995ae1228.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2023-09-23更新
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4卷引用:江西省上饶市广信区综合高级中学2023-2024学年高三上学期9月月考数学试题
名校
解题方法
5 . 已知函数
.
(1)求不等式
的解集;
(2)若关于
的不等式
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b85f540cc39abc637c1ac7ddb6bb4e4.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abdaffa9c15517afe6d7ba6488f88f67.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/096a38f94ff870a0181113b8696ea68f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解题方法
6 . 已知函数
.
(1)当
时,求不等式
的解集;
(2)若
,使得不等式
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/832f8d53c04eada2ce952e42fc26f7e9.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3ca4c4eb820e80c36267b41a089ffc2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/626d21f09396d90862704dcf2462d885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/629276ea24634d8bce0257a0edfd45bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2023-04-28更新
|
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3卷引用:江西省赣抚吉十一校联盟体2023届高三下学期4月联考数学(理)试题
名校
解题方法
7 . 已知函数
.
(1)当
时,求不等式
的解集;
(2)对于任意实数
,
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b45a768e7267ce33c891c4ee161044.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94cc25a7cf28ed096549fbae97fce40a.png)
(2)对于任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cc87751c071debc50e9e5b05f6b1b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2023-05-08更新
|
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5卷引用:江西省赣州市部分学校2023届高三下学期4月联考文科数学试题
8 . 已知函数
.
(1)当
时,求不等式
的解集;
(2)当
时,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab11ceec9d74a847999dafb934235e17.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c2e0bb6d63b7bcaee92a470d58cc399.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ec4429beace8d9a1dc214126fc2ce8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
9 . 已知函数
.
(1)求不等式
的解集;
(2)若对任意的
,关于
的不等式
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a70e2f7d20bcfc95936ddd5532fd3a1c.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae2a56d228be240c186790b5e87a6590.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d37dafb12565279285111a5948d835b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
10 . 已知函数
.
(1)若
,求不等式
的解集;
(2)若
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad4b09ca1cbdbb83e84bc3c986f3427.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4827f79723c41bd35bf4871bcac58907.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0825cd5a30edda8adaab033284191a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6154e00013d9dee84c0e941f676ea9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2023-01-18更新
|
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