(1)已知正数
满足
,求
的最小值;
(2)已知
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45900deae0489e87fe448948e8091c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eeb707c13aee480af3ffb10d218a6c5.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f268eadb7f0e2b0d2fb088d60645ac25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c6ce02259a85ea191541f4a708738f1.png)
更新时间:2022-10-31 15:54:23
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解答题-问答题
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【推荐2】(1)已知
,
.求
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(2)已知
,
,求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd2ebb0a5716665baa8b39de263bd424.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acced46b168c563536e75ca77f90a74f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9f2416d1f75a45a314331146550832e.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/140c72a6862cc31b4a060b985f66267a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab248ca7755f0cc3c79b5168a7e9b03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754826457671db8939098215943e656a.png)
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解答题-问答题
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解题方法
【推荐1】(1)解关于x的不等式:
;
(2)已知正数x,y满足
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4c0a14a1ed9b14dfb7d469bf2536ed0.png)
(2)已知正数x,y满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5558c083d34cbb0a58d3ce1dc6f5778e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f0b84ee4ed90face0993d4f4dda379.png)
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名校
解题方法
【推荐2】已知
,
,且
.
(1)求
的最小值;
(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/cd1761d3b7dd4a2df6e74af6d906330a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f29d5f376c75c41ae6af0c8a8565449.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
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【推荐3】设x,y满足约束条件
.
![](https://img.xkw.com/dksih/QBM/2021/1/30/2647331145015296/2651466964393984/STEM/9e807cb78e5245f89be8007b8009797d.png?resizew=378)
(1)在如图所示的网格中画出不等式组表示的平面区域;
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bdde1266feebbb0dc38099673ed4755.png)
![](https://img.xkw.com/dksih/QBM/2021/1/30/2647331145015296/2651466964393984/STEM/9e807cb78e5245f89be8007b8009797d.png?resizew=378)
(1)在如图所示的网格中画出不等式组表示的平面区域;
(2)若目标函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ef585486cab9ba889ec0f06596254e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03c47585fd16a8937585f8d56f9e3795.png)
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