12-13高三上·江苏扬州·阶段练习
1 . 设
若存在互异的三个实数
使
,则
的取值范围是 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baedf51e24e0564137dd0fff69f0e6e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f49905e77566e45adff0b37c98c09ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4327981ee77ce2410862f46619f94dc4.png)
![](https://img.xkw.com/dksih/QBM/2012/1/12/1570686075109376/1570686080401408/STEM/df85d5b1582844418843ff9c56f88cc8.png)
您最近一年使用:0次
12-13高三上·江苏扬州·阶段练习
2 . 已知三次函数
的最高次项系数为
,三个零点分别为
,
,
.
(1)若方程
有两个相等的实根,求
的值;
(2)若函数
在区间
内单调递减,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
(1)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe817668be84acdaa46d2b5befe1488.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fab6e8dad1d2e7151f55c5e86042f7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ade6884988d754122ecdb55e4d1cf58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
11-12高三上·江苏扬州·开学考试
名校
3 . 设
,
,函数
.
(Ⅰ)设不等式
的解集为C,当
时,求实数
取值范围;
(Ⅱ)若对任意
,都有
成立,试求
时,
的值域;
(Ⅲ)设
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d80138a223c9633ebe2b24b3abd7037.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07f28721d52cd2fad81f1c651b1feab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb713ef84dd1cca1df8e0c7c7ea6cab.png)
(Ⅰ)设不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bafb511452fb3b93485fe41c73810efd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(Ⅱ)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545931b962cf570712d04888b57093f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅲ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d307a610ea0f37a3bba8e8f65f18338.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cfcc567b95a320abcb25509923cd001.png)
您最近一年使用:0次
10-11高一上·江苏扬州·期末
4 . 方程
的根
,
∈Z,则
=______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aad2a84911ffc3ee5e5608437fee699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934480d792a09037743f3c12ab8baed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
9-10高二下·江苏扬州·期末
5 . 已知函数
,若
互不相等,且
求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6732f8d9aa9b7c6ff3c23c01cd8920b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f5ce5e53ebca27b3041e36abbc6b9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d2d7ddd7ef3b6cde30018bc6a84b9e0.png)
您最近一年使用:0次