选修4-5:不等式选讲
已知函数
的最小值为
.
(1)求
的值;
(2)若
,
,求
的最大值.
已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/131535986108c4a13778cedc9f5896f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c0e9d1ad9561d693958756ee8398218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f470186e26a96aabfd820e205e6d5e9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef447b76cc42ffd5203c58195a770e56.png)
更新时间:2017-05-25 02:45:40
|
【知识点】 求绝对值不等式中参数值或范围解读
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知函数
.
(1)当
时,解不等式
;
(2)若
在
时有解,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c239689ff467e060d518404088b6f60d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b4955c5adc717b7f6f0b975e0724ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53224898de85a85058ad336490bbbaa7.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
解题方法
【推荐2】设
,已知函数
的最大值为3.
(1)求证:
;
(2)若不等式
对任意
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf5a729980cd34760285fb235b352044.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d1dbe87fb1568634663d56a8507a1fc.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8025d2b85982f6b846f554c6a72522f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790daaa89fc9d093f45023becf765697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次