若对于实数
,
有
,
.
(Ⅰ)求
的最大值
;
(Ⅱ)在(Ⅰ)的条件下,若正实数
,
满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669adbbb51de05a3d4f27e245d004050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51e1371b5ffd29041b1dc86bfd406d2c.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4769398000868a14fa322d0b1df97c6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(Ⅱ)在(Ⅰ)的条件下,若正实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c568952f0da52aa9d0583377981a02f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255b5812e63fd28e1eba816f71417b5f.png)
更新时间:2020-05-13 10:30:57
|
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐2】已知
,
,且
.
(1)求xy的最大值;
(2)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86db1ff1b996e33de049889c04bf9a0b.png)
(1)求xy的最大值;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd31dc2d0967db352574381d66d33fc0.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1】已知函数
.
(1)解不等式
;
(2)若函数
,若对于任意的
,都存在
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e32fe6eea89758fe843a869976d08fd.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b287ea2d6efa5fcc5210ac3435244f33.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebae05291b76600ef780d9f109c1c0c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12965bbc260bdbb0df0a110e59fb8d78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1bf60c5e8996d138198fe74f30ce520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8bc913304f7771ea2f7c16de387bab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐2】选修4-5:不等式选讲
已知函数
.
(1)解不等式:
;
(2)已知
,求证:
恒成立.
已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e47b61740c90d884e9fb29c4d7fe12.png)
(1)解不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b484dcdbcca46a636fa46336f041fa.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fde11c42c1af9bf367c85b9baf468254.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cedb0beae182bd5f2104d32c847dfad7.png)
您最近一年使用:0次