已知
、
、
均为正实数.
(1)若
,求证:
;
(2)若
,求
的最大值.
![](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/071a7e733d466949ac935b4b8ee8d183.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d6fae71c162e7be027a9b30a9187813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91dc97f78d372af5df76e608119373f5.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/626e3c584a6a5f7ed695e59b1844c254.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f0281e6bbdbe08beeccb55adf84536.png)
20-21高一上·湖南长沙·阶段练习 查看更多[4]
湖南省长沙市湖南师大附中2020-2021学年高一上学期第一次大练习数学试题(已下线)第二章 一元二次函数、方程和不等式 专题01 基本不等式的常见用法- 2021-2022学年“高人一筹”之高一数学“痛点”大揭秘(人教A版2019必修第一册)湖南省邵阳市邵东市第一中学2022-2023学年高一上学期第一次月考数学试题四川省绵阳中学2023届高三适应性考试(三)理科数学试题
更新时间:2020-10-28 10:32:03
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】已知集合
,
,
.若
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc8ea2467af5336e86d99f5a9582ea5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84a38cbae5c5604fbfbe3843a929fa3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df4e8d9b5077f35a4204820f1b288a80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bafb511452fb3b93485fe41c73810efd.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】已知关于的x不等式
.
(1)若
时,求不等式的解集;
(2)若
,解这个关于
的不等式;
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4400a69e0d64486c03ef71f2af62f605.png)
,
恒成立,求a的范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccf5447fc522ced06f7cc892169d54f0.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4400a69e0d64486c03ef71f2af62f605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00879cffccc124857ca755a8c345e45f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8507213545e3bb0893aca604a5598c9f.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】已知a,b,c均为正数,a,b,c不全相等.求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f8e55dff8fe4d857c135c6da4d4867.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】已知函数
.
(1)求不等式
的解集;
(2)设
的最小值为
,正数
,
满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13e5c7aa77883a1e716e6b31df61149c.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02bdb9352c3d83757dcf46cc84cd1d47.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](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/e83d6fb0116386f7aceb88947653b159.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e046142ae72c832f43dce6e8103d70.png)
您最近一年使用:0次