求下列不等式的解集:
(1)
;
(2)
;
(3)
;
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b176006cfa40938a1a981e711cd339bf.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663dc9a08ac2b6b2e1f02c032aebb9a3.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9e6329ade30e99ad5056065965e0756.png)
21-22高二下·黑龙江鸡西·期中 查看更多[4]
更新时间:2022-07-02 18:04:04
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【知识点】 解不含参数的一元二次不等式解读
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解答题-问答题
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较易
(0.85)
解题方法
【推荐1】已知集合
,
.
(1)求
;
(2)若
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(1)求
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(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/521c8f3f084af427ec1c464f8b6bed86.png)
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解答题-作图题
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较易
(0.85)
解题方法
【推荐2】已知A={m|a
m
b},B={m|
+4m+3
0},A=B
(1)求实数a,b的值;
(2)若实数x,y满足
,试作出不等式组表示的平面区域,并求t=
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8536a5ebd76f494c03019086506d8e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8536a5ebd76f494c03019086506d8e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d7e680da2ccf8ca16e19aa8a02a49b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8536a5ebd76f494c03019086506d8e6a.png)
(1)求实数a,b的值;
(2)若实数x,y满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661d615f6afa146b2e4eb620c2f97cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/538245a9d710f10f0b9a4d40f6193d3e.png)
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