解题方法
1 . 给定函数
,
,
.
(1)求不等式
的解集;
(2)
,用
表示
,
中的最大者,记为
,用解析法表示函数
;
(3)设函数
在
上的最小值为
,求函数
的表达式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26af862ac8e4e2fe03204b0463a7a789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e34d0dcc6c8d3ec910b04cd20cba5be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43920f5171ed31db2520ef00e4c5fc24.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/531bcdb6324cb5a759301daddf9768c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316f701027f4bd38abca039b3499b498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/531bcdb6324cb5a759301daddf9768c0.png)
(3)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/531bcdb6324cb5a759301daddf9768c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48222eea9755a7c7635578031a573bc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18b36da3b4cc0a0cc408ef324b04c9d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18b36da3b4cc0a0cc408ef324b04c9d4.png)
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2 . 已知全集
,集合
,
,求:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc0dc8098ad6f31bdd87771ca9cfa33a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a139cec4dbe5bb7f2c9572148ad14e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6f53a8c886c846f078fdf58bd2d3010.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9ee4df3cd0c5982eec8be19e136130.png)
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解题方法
3 . 设函数
.
(1)求关于x的不等式
的解集;
(2)若对任意的
,
恒成立,求实数a的取值范围;
(3)若
,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e082e154a42465c8810ae25f6b3fdff1.png)
(1)求关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4d9f036ff9696aa178435630f1badb.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833bd7d3b6627d362f4df8c3d3e62254.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859458471c86ae39e0cc42d2d960d03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56c1955d880af7a2d046da8627a6f527.png)
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4 . 解下列不等式:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe60550fd78a515850d1b8618c857c9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/717378f5face5028b798c83b7df34cbc.png)
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2023-02-02更新
|
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5卷引用:天津市第五十七中学2023-2024学年高一上学期第一次月考数学试题
名校
5 . 若“
”是“
”的必要不充分条件,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ffad55848d3b67d53acc4c769c261d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4208f442fe081467777adb0b7edd9528.png)
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6 . 已知函数
,
.
(1)若函数
的图像经过点
,求不等式
的解集;
(2)若关于x的不等式
对一切实数x都成立,求b的取值范围;
(3)当
时,函数
的最小值为1,求当
时,函数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aaf8ff792d7d72723a0c06f83b01bb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dd0914dc4d4c7f75710ff460a286fcf.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/238f0ea276a00ae8d681ce00cc11c8ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
(2)若关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6070f2ee5e48cce77eb4a2cb9f11ccfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6070f2ee5e48cce77eb4a2cb9f11ccfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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2022-11-16更新
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3卷引用:天津市河北区2022-2023学年高一上学期期中数学试题
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