名校
解题方法
1 . 已知函数
.
(1)若不等式
的解集是
,求
的值;
(2)当
时,若不等式
对一切实数
恒成立,求
的取值范围;
(3)当
时,设
,若存在
,使得
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134041de38e10e600623318a14d8ded1.png)
(1)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9a845e51ba5c12ec99975423deb347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d828749658cd888cb1616253ed1709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f3962dbbd3a9633497af70a1a08c54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac47aa9171eb54d29a4da9658b525cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
2020-02-19更新
|
317次组卷
|
2卷引用:江苏省南通市海安高级中学2017-2018学年高一上学期期中数学试题
名校
2 . 已知关于
的不等式
的解集是
,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8f21016c282a4d3bd8219d8dd49685f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b0e77517e2071963f167b56b093ab6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
3 . 如果关于
的不等式
的解集为
,则实数
的取值范围是___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87353bec8bc9975026206dd507eb7df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2017-06-23更新
|
677次组卷
|
3卷引用:江苏省南菁高级中学2016-2017学年高一下学期期中考试数学试题
9-10高一下·江苏扬州·期末
4 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3c988d875438535244ee2b092a779b.png)
.
(1)若
的解集是
,求实数
的值.
(2)若
,且
,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3c988d875438535244ee2b092a779b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d21ab25f1663a1ce600218b35aae60f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27cf818dd484cc4cebd40a5f28eb8e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55d77fec1e62ae34e3729ba46d101f34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e79b08dac412cde3886ba079ad62a45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed961de27af72b7d11887ccfb6f15071.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af843f03248254832458e9a803d8bc1.png)
您最近一年使用:0次
名校
5 . 已知
,关于
的一元二次不等式
的解集中有且仅有
个整数,则实数
的取值范围为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30246f7d5aac981371ffdf5dccbb4095.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2016-12-03更新
|
445次组卷
|
2卷引用:江苏省徐州市第一中学2016-2017学年高一下学期期中考试数学试题