1 . 不等式|x-3|+|x-2|≥3的解集是
A.{x|x≥3或x≤1} | B.{x|x≥4或x≤2} | C.{x|x≥2或x≤1} | D.{x|x≥4或x≤1} |
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解题方法
2 . 已知函数
.
(1)当
时,求不等式
的解集;
(2)若当
时,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fe439702f8e07fede6099d6af08a298.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7a1d739890a8951586e23b78b035bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
(2)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e57f4dd6bc176125364f743dc338783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49178e8c76c24baa109dc76527307ba1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2020-05-14更新
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62次组卷
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6卷引用:2020届福建省漳州市高三下学期(线上)适应性测试数学(理)试题
2020届福建省漳州市高三下学期(线上)适应性测试数学(理)试题2020届福建省漳州市高三下学期(线上)适应性测试数学(文科)试题2020届福建省厦门市高三毕业班第一次质量检测数学(理)模拟试题(已下线)专题15 不等式选讲-2020年高三数学(理)3-4月模拟试题汇编(已下线)专题14 不等式选讲-2020年高三数学(文)3-4月模拟试题汇编江西省宁冈中学2022届高三上学期期中考试数学(理)试题
名校
3 . 已知函数
.
(1)当
时,解不等式
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f1bcf7ac45a798633b84ab5be4c9ed0.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3061bb4c726f3a1734a0d1d084b58f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c8e96a8c86d287ffa839c51a450d48a.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99e0d8bdabeb382b2d9d522dfb80423d.png)
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解题方法
4 . 已知
.
(Ⅰ)求证
;
(Ⅱ)当
,求解不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2981166ac967bc4d0ff32abbf30d22c.png)
(Ⅰ)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94cc25a7cf28ed096549fbae97fce40a.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15d585bb8b1276cb81ada8c2975571eb.png)
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5 . 已知函数
,(1)解不等式
;
(2)若关于
的不等式
的解集为
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17c1ecc992b136cffa011a3caa569346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e8a5a31aa6c0dd6fc865071043b6fd5.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a8877b54c14f31fc3cfebe041711a54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2013·福建漳州·一模
6 . 已知函数![](https://img.xkw.com/dksih/QBM/2013/8/23/1571319354097664/1571319360151552/STEM/1b23eb5ea9f646929b5b9b55ab068df0.png)
(I)当
时,求不等式
的解集;
(Ⅱ)若
的解集包含
,求
的取值范围.
![](https://img.xkw.com/dksih/QBM/2013/8/23/1571319354097664/1571319360151552/STEM/1b23eb5ea9f646929b5b9b55ab068df0.png)
(I)当
![](https://img.xkw.com/dksih/QBM/2013/8/23/1571319354097664/1571319360151552/STEM/38d926f1d8574fba949169dc373cf539.png)
![](https://img.xkw.com/dksih/QBM/2013/8/23/1571319354097664/1571319360151552/STEM/6d315aa548804140b6d5b287920eab34.png)
(Ⅱ)若
![](https://img.xkw.com/dksih/QBM/2013/8/23/1571319354097664/1571319360151552/STEM/0a6c0063a9e5448e8b0cc89db95434de.png)
![](https://img.xkw.com/dksih/QBM/2013/8/23/1571319354097664/1571319360151552/STEM/86a18385361a47e7a7b92d4f289b04e7.png)
![](https://img.xkw.com/dksih/QBM/2013/8/23/1571319354097664/1571319360151552/STEM/26a8e13c15074925a0e8938c99fee061.png)
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2016-12-02更新
|
1114次组卷
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3卷引用:2013届福建省漳州市四地七校高三6月模拟考理科数学试卷