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1 . (1)解不等式组:
(2)先化简,再求值:(
-
)÷
,其中x=
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731bc155992954c7899fb0669576e594.png)
(2)先化简,再求值:(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b60b122e651b49f676e07bd8c815006f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a76241e782e13eeee7c187507778aecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b05e238548dc202137a63d8b20ff277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
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解题方法
2 . (1)化简求值:
;
(2)解关于x的不等式:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5796a837ce061d7494540f0bc522923f.png)
(2)解关于x的不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7232718d2d78bad722a2ffc476059bc0.png)
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3 . (Ⅰ)计算求值:
(1)
________________;
(2)
____________________;
(Ⅱ)解关于x的不等式:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24175597cab1d81a98da3851570d2ae6.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76606084f76f510b7a29c001b92cebf1.png)
(Ⅱ)解关于x的不等式:
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f444d17cd7da594f6b4166c28857df8.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d11c0ac42cde9e5c743659ce1a2997c2.png)
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4 . (1)计算:
;
(2)解不等式组:
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9b1f5e8369ff1939ad6dc74688dbd6b.png)
(2)解不等式组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdcfe579029c103167046cae43c31b33.png)
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5 . (1)解关于
的不等式组:
;
(2)解关于
的不等式:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb40e7fac02ea46c97af84d54ad6a525.png)
(2)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0511fbd6f7563ba3e7acd57482af1f5b.png)
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6 . 回答下列各题.
(1)求值:
.
(2)解关于
的不等式:
(其中
).
(1)求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef28c427f4ab6ba19a6346dcbaa18f5c.png)
(2)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/965d021202509620ab356d6a21fb374e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
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2020-12-14更新
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311次组卷
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3卷引用:福建省福州市永泰县第二中学山海联盟校2020-2021学年高一上学期数学期末联考数学试题
7 . 已知不等式
的解是
,设
,
(注意分母)
(1)求a,b的值;
(2)求
和
(建议:先作数轴,再计算)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99cf6cc318632bf552d30b25f4d28b8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f2333e2a05532b97e14b912e331ec6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3c937a8da260ce7dfc6fd1fc9030da6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2301d7708a60ebf634af76bf123e0c.png)
(1)求a,b的值;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff39d1e9ee46fb95295cd5ab593bf14e.png)
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8 . 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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9 . (1)解不等式
;
(2)若
,解关于
的不等式:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3efc50ad389c0021da522df288fdab70.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/1069475ff1f5d28f9d42ec49de33416f.png)
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2020-11-04更新
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2卷引用:江苏省无锡市堰桥高级中学2021-2022学年高一上学期10月阶段检测数学试题
10 . 甲、乙两位同学在求方程组
的解集时,甲解得正确答案为
,乙因抄错了c的值,解得答案为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5225982e0f2e1f8b47df08480d501654.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9ce0be6ed4a3f0eee99bb6f20911e53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85b47d69260bb8ba59d6da90d068dde0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b1568303e147cf1e1c133c189be4afb.png)
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2021-12-08更新
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6卷引用:辽宁省大连市第十五中学2021-2022学年高一上学期期中数学试题