2023高一·上海·专题练习
1 . (1)证明:
对所有实数
恒成立,并求等号成立时
的范围.
(2)设不等式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7e7e78d71dd8a58479e052c999202c.png)
的解集为A,且
,
;
①求a的值;
②求函数
的最小值,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c36d2c4f845bd8e3b91441c65b6a9db6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)设不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7e7e78d71dd8a58479e052c999202c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9fae1e402d20c8cedab0fd9e6fb8d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0007234d5c4e1e2c5ffaf75d51734df0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c86c7339700b762ba814a67bed5f984d.png)
①求a的值;
②求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00445f69344c65acd30662446343297c.png)
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19-20高一·全国·课后作业
2 . 若
的解集是为
,则实数
的范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4a3d93c419872c06d24d26a50aa5cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2df1bc516cf59796f7610454440afc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
3 . 已知x,y都是正数,且
.
(1)分别求x,y的取值范围;
(2)求
的最小值及此时x,y的取值;
(3)不等式
恒成立,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04645353d91a5beb6d02c06bb62683a9.png)
(1)分别求x,y的取值范围;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fc838e1477179b36ca7481ee2cc1e8.png)
(3)不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fcebe10ae382d181636f14889c24f15.png)
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解题方法
4 . 已知函数
.
(1)
,不等式
恒成立,求实数
的范围;
(2)若关于
的不等式
在
有解,求实数k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc97f0fd545876b45132a9918ad9f6c1.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/346a8575de755941b7de759f17449d87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a89be1009f96de083175f681f6ae1d.png)
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5 . 不等式组
的解集为
,则a的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbc11b548b1ff75108c57aa10638079a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d39bac2b9f9e2e4a5b33cd4873cb146.png)
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6 . 关于
的不等式
的解集是
,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d1fa57de00aa22ed14e8326ffc5238.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2023-11-23更新
|
178次组卷
|
2卷引用:上海市控江中学2023-2024学年高一上学期期中考试数学试卷
名校
解题方法
7 . 已知函数
.
(1)当
时,求不等式
的解集;
(2)若不等式
对任意
都成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5855e2a5e61d3e6eb98f032e10e43dea.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79d5a0e25aebe1cc182d2247ed344652.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/990d3feee85e869ea9ab561ff63d46a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790daaa89fc9d093f45023becf765697.png)
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解题方法
8 . 已知
是实数,命题
:对任意
,函数
的图象始终在
轴上方;命题
:关于
的不等式
的解集为空集.若
为假命题且
为真命题,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63aa23be5349ee322bf8aed599c104dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad411ceaf1a8e53c748df6cf53a0a96f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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9 . (1)求不等式
的解集;
(2)已知
,若
的最小值为3,求实数a的值;
(3)若不等式
对于任意非零实数a恒成立,求实数x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5cc5ac6a77e895c009f1e1966e2346e.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec2349e3509799b01ce88ce91a0d7dda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a080262699cf8f8cf0219db8a7fb6aa2.png)
(3)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d213a5f846c0d10e0a37a6c3d1b5cccc.png)
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解题方法
10 . 对于两个实数
,
,规定
,
(1)证明:关于
的不等式
解集为
;
(2)若关于
的不等式
的解集非空,求实数
的取值范围;
(3)设关于
的不等式
的解集为
,试探究是否存在自然数
,使得不等式
与
的解集都包含于
,若不存在,请说明理由,若存在,请求出满足条件的
的所有值.
![](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/9f4511ddd731101f31a812687f876d3d.png)
(1)证明:关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4467d44e9a3a7faa7b86a258aeecd06d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4d721dec802cd82c01d1ff1e9760c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)设关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc051b9ac95776718cbcb3f740931f5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/700fa4dfbe1d291042d435778db55f5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7eca6a3e53f7e7b89c996322588a505.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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