2019高二上·全国·专题练习
1 . 计算:(1)解不等式:
;
(2)若关于
的不等式
的解集为
,且
,求实数
的值;
(3)解关于
的不等式:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c447c4e739e50f3630d5ac57aa9cf0bc.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2e597760cba508a4fb39c5a83f9ec2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4af0f8116d42cd991cc7a9f97e0841.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe07ca2bafedb4e6145dbb01bc1af513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afeeecba13d1b662ef717fa141a46ec4.png)
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2 . 选修4-5:不等式选讲
已知函数
.
(1)当
时,解不等式
;
(2)若关于
的不等式
有实数解,求
的取值范围.
已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7643bf1567bcd43c342ec1b1414de23a.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c56aa96328273f0ff42792b0fea2cd4.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ebe53d3242b2198f0aa61fe11bb22fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
名校
解题方法
3 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbe701206342ab596f1b95875a5cd412.png)
(1)若关于
的不等式
的解集为
,求实数
的值;
(2)设
,若不等式
对任意实数
都成立,求实数
的取值范围;
(3)设
,
,解关于
的不等式组
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbe701206342ab596f1b95875a5cd412.png)
(1)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d691ad79c041014c21d3e5b0a54a36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a183ec1ea17c0a765d3f43cc5bec45a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655b06387179d53c1e474fcfcb408b1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b130c45d5a2e951a7b8779ab6fb8970b.png)
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4 . 已知关于
的不等式
.
(1)当
时,解不等式
;
(2)当
时,解等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d3c43898e1862d3edf7ea5df30bd5d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d3c43898e1862d3edf7ea5df30bd5d.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6da800751b82800863f41b628d3304ac.png)
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5 . 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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6 . 已知
.
(1)若
的解集为
,解不等式
;
(2)若
,
,解关于
的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331d5e308cd5469e0f28a8d75f79903f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e12a49601927242c500e1e3b331112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54bc5feff8fc3d1145463d520a7f650c.png)
(2)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/1c73a98c1b3504e09bfbe0db849b0d24.png)
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7 . 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:江苏省盐城市东台市创新学校2020-2021学年高二上学期9月检测数学试题
名校
8 . 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)
您最近一年使用:0次
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
9 . (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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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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