解题方法
1 . 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=
的取值范围.
![](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)
您最近一年使用:0次
2020-11-28更新
|
108次组卷
|
2卷引用:河南省洛阳市2020-2021学年高二第一学期期中考试数学(文)试题
名校
2 . 已知点
的坐标满足不等式:
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/a10fcc82-50e6-4bea-ac3a-27f0c9e8e242.png?resizew=167)
(1)请在直角坐标系中画出由点
构成的平面区域
,并求出平面区域
的面积S.
(2)如果正数
满足
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a2cd4d541f8d78cf6978a2acde0177.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/a10fcc82-50e6-4bea-ac3a-27f0c9e8e242.png?resizew=167)
(1)请在直角坐标系中画出由点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
(2)如果正数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf20e12fb911e7f1aa70d592badfbbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0fde4f8aa8e36636dd397384a1fe8da.png)
您最近一年使用:0次
2020-04-18更新
|
668次组卷
|
6卷引用:2020届河南省高三第十次调研考试数学(文)试题