名校
解题方法
1 . 已知二次函数
(
)
(1)若
,
,对
,
恒成立,求实数a的取值范围.
(2)若
,
的解集为A,
的解集为B,且
,求实数b的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331d5e308cd5469e0f28a8d75f79903f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3eb9b6fe8959ae9e71e857b6d6fed49.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e17ee5f43412795671704ab0e8d0b2f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249a976e88133f3b3733f09137cf5c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6d5089d60293c6fa114c127ec5c7922.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6acb0f1ac694dd177e99fc385f23318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca6ad4d23e3a0c6bf7a538e577081b7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79d02e5de0c92487382f4b98376e9740.png)
您最近一年使用:0次
名校
解题方法
2 . 已知关于x的函数
和
.
(1)若
,求x的取值范围;
(2)若关于x的不等式
(其中
)的解集
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce81be7dbac1bd6ad7b3b6be3c2d423.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f28b848513cf03ef4bd4bddfd49800f6.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df86b0da538701c08fb214608e062372.png)
(2)若关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5e74c814429bbef147280ecd517ffd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e419fd930ea3b349e70d35de4380cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e383eff7191e3bbe549027ef71382aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72b3185579edda8ea518daf2be3e0d30.png)
您最近一年使用:0次
3 . 设命题P:关于
的不等式:
的解集是R,命题Q:函数
的定义域为R,若P或Q为真,P且Q为假,求
的取值范围.
![](https://img.xkw.com/dksih/QBM/2015/1/14/1571961543532544/1571961549389824/STEM/7a3b18c53d7f4faa989e36ab0db39f0a.png)
![](https://img.xkw.com/dksih/QBM/2015/1/14/1571961543532544/1571961549389824/STEM/235fac6639744b2d879bd31dd891cc98.png)
![](https://img.xkw.com/dksih/QBM/2015/1/14/1571961543532544/1571961549389824/STEM/0e298600a48946138de23b70c8caa4ee.png)
![](https://img.xkw.com/dksih/QBM/2015/1/14/1571961543532544/1571961549389824/STEM/ebbe983e04df4ff387bf23467498ddd4.png)
您最近一年使用:0次
2016-12-03更新
|
757次组卷
|
2卷引用:2015届江西省吉安市一中高三上学期期中考试理科数学试卷