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 . 设二元一次方程组
恰有一组解(α,β), 则方程组
解(x,y)等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a65bd6cdc598a67059dc4293a1694dc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3a1e7eed925bba05d687a9d993de75c.png)
A.(3α,3β) | B.![]() | C.![]() | D.(15α,6β) |
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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/1e35f874f2c74d693c6bfbe8ec461990.png)
(2)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8495da9a91bf7bfa549ca3aa4b496f37.png)
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2024-06-04更新
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764次组卷
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2卷引用:天津市第三中学2023-2024学年高二下学期6月月考数学试题
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4 . 解不等式:
(1)
;
(2)若
,解关于x的不等式
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e25fd39db86c3a98684c2d36aff566c7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1069475ff1f5d28f9d42ec49de33416f.png)
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2023-11-15更新
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5 . (1)解不等式
;
(2)已知a是实数,试解关于x的不等式:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c20dce2b08abc4bf328455c71ded78f9.png)
(2)已知a是实数,试解关于x的不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b89909d1c4bc96bb0b355d353f325c4e.png)
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解题方法
6 . 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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7 . 解关于
的不等式:
.
(1)当
时,解不等式;
(2)当
时,解不等式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bd111258d2a460ee0cf15d8f282c322.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
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8 . 已知函数
.
(1)若
,解不等式
;
(2)解关于x的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b029a4a16b7736c0f2e39ec9f9f723f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
(2)解关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
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9 . 已知函数
.
(1)当
时;解不等式
;
(2)若
,解关于x的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041fe70ee715b5e0124749a4ab5e3deb.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4f5e34a75ab0baeffa3ccbf93c00591.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24505cd5c1d84ecb57404c645ea44c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
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10 . 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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0656773aa45dbe7437d7464a421c042e.png)
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