已知二次函数
,关于
的不等式
的解集为
,(
),设
.
(1)求
的值;
(2)
R
如何取值时,函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cc6c0fd1a3e2428542dbefb518280e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d3c39d7e70f6291e47adb6367c5f31f.png)
存在极值点,并求出极值点;
(3)若
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
,求证:
N
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eb145e4d81c71721c0dcabd187431b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d1d10e3278c5523d0b7344e6b128ccf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db50808197f81f61da6de81c0d4abe22.png)
![](https://img.xkw.com/dksih/QBM/2015/3/31/1572051425050624/1572051431342080/STEM/16d1e6bbc6554282b575bfc1e1c12d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d977fb6d13ca2e62dbdc66e31e4ff5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53d8e18d9660c3aeecf78020dc54c075.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cc6c0fd1a3e2428542dbefb518280e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d3c39d7e70f6291e47adb6367c5f31f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55fa30b8a0cf03566e59f39cb394d8a1.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0019efd932db51afcfa2c4f6b160ec3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72106152f5d2d9a120c5709ccba49902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c81a57cae6fe8a6542f2b56ff5e0c9b2.png)
更新时间:2016-12-03 11:29:44
|
【知识点】 一元二次不等式
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
【推荐1】设函数
.
(1)若
,且
均为正实数,求
的最小值,并确定此时实数
的值;
(2)若
满足
在
上恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1fed8e13c83e9bcdbd259eab5f3c10a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0f39001eda1eab65ca70a6cf924c28d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce460941cf3ff54ccb6aec5085689a91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e446c2c7236efca702c2869e5b5fdd52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7246db5afcce309e7006e3377f7b75ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐2】集合
,
.
(1)求集合
,集合
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2c3c4eb0a9aeedbef578d9e721660c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/824553412d4c3e73525bc6ed36619545.png)
(1)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b05d2be27e8f53e4de3071846dffb41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次