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)
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2020-11-28更新
|
108次组卷
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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
2 . 设
和
,则函数
.
(1)用分段函数的形式表示该函数
;
(2)画出该函数的图象;
(3)写出该函数的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a4220bf78b2f8de69219c5f826a9ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/215317137927881513572bcd94a660ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76cb2dd023553e6609c47202fe30c479.png)
(1)用分段函数的形式表示该函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/531bcdb6324cb5a759301daddf9768c0.png)
(2)画出该函数的图象;
(3)写出该函数的值域.
您最近一年使用:0次
19-20高一上·浙江·阶段练习
3 . 已知函数
,
(1)作出
的图象,并写出单调增区间;
(2)求方程
的实根;
(3)若
,
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ad95ec5a2b9f216c2b294f9cba58d42.png)
(1)作出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ad95ec5a2b9f216c2b294f9cba58d42.png)
(2)求方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1656a75d215f8c6d703e682f02ec46c.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/407dd8d647963539d5104e6e4ef8f14e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8450d9e13cbf90a6050fb300741b661a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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4 . 求函数
的零点,并画出函数的图象.解不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3c8f31ac48733eada5e603d8b040e95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54236146c512788e40eaafb5d17d29bf.png)
您最近一年使用:0次