解题方法
1 . 已知函数
,
.
(1)若不等式
的解集为空集,求实数
的取值范围;
(2)若
,且
的解集为
,求
的最大值,并写出此时
和
的取值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81ad5cc869ac38f1afa554aac6eee3a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e72f6b2ef3329828cb8fc873eeba7c.png)
(1)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6acb0f1ac694dd177e99fc385f23318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4741556c029b5811318746d837cf246.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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2 . 已知函数
.
(1)若
时,
的解集为
时,求实数
的值;
(2)若对任意
,存在
,使
,求实数
的范围;
(3)集合
,若
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e0be5afa2a9e64ec663846e1b4c1404.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bae4f8c44ccb73271388938a6f41c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec25b9d7ca47b780a744c2ebbf31d925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f851f9849dfe2c3306d20d06f712069d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/938328f01241661268ca59fa46d75ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79d02e5de0c92487382f4b98376e9740.png)
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2019-11-08更新
|
237次组卷
|
2卷引用:上海市曹杨二中2019-2020学年高三上学期期中数学试题
名校
3 . 若关于
的不等式
的解集为
,则实数
的取值为________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33401fcc8f74d5c65e09fdf6a3400519.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/612f208b079e2015ce544f8550334ebc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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4 . 已知不等式
的解集为
.
(1)求
的值;
(2)若
在
上存在反函数,求实数
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bdbb8c428dec8818f45e96b2e71df92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a98d9596e9b3ee39180cc72981187927.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02ed2127693ea75aa7e1fe1e1aa06eb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f48ce1bf58f2ef6b2cb3d2e713624fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc30165c18de623d0a3efb961e606d1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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5 . 若不等式
的解集为
,且
,则实数
的范围为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3afa326eb0310ca0d935b3739629973.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52854d0ead4737302f4b4706e1f80553.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2019-11-09更新
|
180次组卷
|
2卷引用:上海市嘉定区封浜高级中学2018-2019学年高一上学期期中数学试题
6 . 已知命题甲:方程
在
上有解;命题乙:只有一个实数
满足不等式
.设命题甲、命题乙为真时实数
的取值分别组成集合A、B.
(1)求集合A、B;
(2)若命题甲与命题乙至少有一个是假命题,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b77a2f9dd02539161aa9ef8ab669fa35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417ab20883d799aaf311371393fa7d7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b74d79828527a46a6b239b0c82fe9fef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)求集合A、B;
(2)若命题甲与命题乙至少有一个是假命题,求实数a的取值范围.
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23-24高一上·上海浦东新·期中
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解题方法
7 . 已知不等式
对任意实数x恒成立.
(1)求a的取值范围;
(2)求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8926477935bcda6bd9f8c2adb64a2c47.png)
(1)求a的取值范围;
(2)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a66c008af877770b9988d606eaab9467.png)
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解题方法
8 . 命题甲:关于
的不等式
的解集是空集.命题乙:指数函数
随着
增大而减小.
(1)若命题甲、命题乙中至少有一个真,求实数
的取值范围;
(2)当命题甲是假命题且命题乙为真命题时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c01a13ec34f954d237f72aa56a4a5388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bece79fa8dae9f21557e485590bb602c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)若命题甲、命题乙中至少有一个真,求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当命题甲是假命题且命题乙为真命题时,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/853eca21bcd065961ddda3246b866120.png)
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9 . 设
,若关于
的不等式
的解集中的整数解恰有
个,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6745a385ffb8f82ead1a1241b1caf76d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b43ca9a0da554751bd2ab722a34ceb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-11-16更新
|
360次组卷
|
8卷引用:上海市市北中学2022-2023学年高一上学期期中数学试题
名校
10 . 已知
均为实数,若存在
使得关于
的不等式组
的解集为
,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ec18aa8ab6f4a4e70722e4df77c9c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e5e6c064e07daddd71f6789290fc52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3163951e7f4d472da5b7ba4171c88e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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