解题方法
1 . 设全集
.
(1)解关于
的不等式
;
(2)记
为(1)中不等式的解集,
为不等式组
的整数解集,若
恰有三个元素,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a64dc61989ca50b9ee19d835c4ed268.png)
(1)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de90ac59bcff9f91525b40d2018f0c6f.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fbc1d281c186b0ac29ea9c92a1b24c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00c5e00c0716742d29b5814b83e07528.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
解题方法
2 . (1)解不等式:
;
(2)设集合P表示不等式
对任意x∈R恒成立的a的集合,求集合P;
(3)设关于x的不等式
的解集为A,试探究是否存在a∈N,使得不等式.
与|
的解都属于A,若不存在,说明理由.若存在,请求出满足条件的a的所有值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4792db06e3e32dccdbec06922ee62d3b.png)
(2)设集合P表示不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318b4bc3fd817a8a1731c2168273d876.png)
(3)设关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa93ab2b74e928c5a7f4facabd6e233e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/700fa4dfbe1d291042d435778db55f5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25b4350e789f1c3ca3c3e67908960b20.png)
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2020-12-07更新
|
267次组卷
|
4卷引用:上海市松江二中2020-2021学年高一上学期期中数学试题
上海市松江二中2020-2021学年高一上学期期中数学试题上海市川沙中学2020-2021学年高一上学期期末数学试题(已下线)2.3 三角不等式(第3课时)(2)(已下线)第二章 等式与不等式(压轴必刷30题7种题型专项训练)-【满分全攻略】(沪教版2020必修第一册)
名校
解题方法
3 . (1)解不等式:
;
(2)解关于
的不等式:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae29ecf34e712b7a414f8c1347aefdb2.png)
(2)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f93af2ed9a6ad10249ea14fd0c753f.png)
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4 . 已知函数
,
.
(1)当
时,解不等式
;
(2)比较
与
的大小;
(3)解关于x的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46c9ffa84da44c9449e17b09337c0b90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
(2)比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2c70fcaa661df4fbcad820b439accda.png)
(3)解关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
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5 . 已知
.
(Ⅰ)若
时,
的解集为
,解不等式
;
(Ⅱ)若
,
,解关于
的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4e73001005c51065ad1315be7a4175d.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e520c1ab44faaa476a5f3f6181db0f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c441f43aa65684e2d5e04cd081461cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54bc5feff8fc3d1145463d520a7f650c.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d464f6926d5666db5836843f3d73dd71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e768f6d07a30c490a1011a8256548bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6000b174147cec2de26041837aec1b3.png)
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2020-07-27更新
|
344次组卷
|
3卷引用:四川省绵阳南山中学2019-2020学年高一下学期期中考试数学试题
名校
6 . 已知函数
.
(1)当
,
时,解不等式
;
(2)当
时,解关于x的不等式
(结果用a表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5a2292af271100980d5dff59ca72bc2.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f600cfe06ce3b664321868968371bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1645a4a5828910639372766aa36a2ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
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2020-08-06更新
|
302次组卷
|
4卷引用:江西省瑞昌一中、九江三中2020-2021学年高二上学期期中联考科数学(文)试题
名校
7 . (1)在复数范围内解方程:
(i为虚数单位);
(2)设系数为整数的一元二次方程
的两根恰为(l)中方程的解,求
的最小值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f31bce2a133fdf2231046fa43cb4f149.png)
(2)设系数为整数的一元二次方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13fa32c1e926f40a0722d106563777ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a343d47de28db5748a6f0a8c6f4715d7.png)
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8 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f27c13c6528c4fdad70f0ad2fd8d73a3.png)
(1)若
,解不等式
;
(2)解关于
的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f27c13c6528c4fdad70f0ad2fd8d73a3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7468f570e41451a147f727b2b84ae1c9.png)
(2)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5967cc62862986840af4dd29df4bcc41.png)
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9 . 设函数
.
(1)若
,解不等式
;
(2)若
,解关于
的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d66c74b5a01f582735a43d39eadc31.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
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2020-02-21更新
|
222次组卷
|
2卷引用:重庆市重庆外国语学校2018-2019学年高一下学期期中数学试题
10 . 解不等式.
(1)解关于
的不等式
;
(2)
.
(1)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/393e42bba40422b99a847889fe811596.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/786dd3541ca3ae09f7a212259fff67ff.png)
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