1 . 设
,关于
的方程
的四个实根构成以
为公比的等比数列,若
,则
的取值范围为______ .
![](https://img.xkw.com/dksih/QBM/2015/3/12/1572005271003136/1572005276688384/STEM/8bc47ed773c74172b7d557e6dd14a85b.png?resizew=53)
![](https://img.xkw.com/dksih/QBM/2015/3/12/1572005271003136/1572005276688384/STEM/027d06487b84471d99ad5b1b0cbd49cf.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2015/3/12/1572005271003136/1572005276688384/STEM/3e078bf1ea0f41ba98ecb916a4c27314.png?resizew=179)
![](https://img.xkw.com/dksih/QBM/2015/3/12/1572005271003136/1572005276688384/STEM/79a563d832994ebba80aaca202b7c72f.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2015/3/12/1572005271003136/1572005276688384/STEM/941698508805426eb0d738dd811df1cb.png?resizew=61)
![](https://img.xkw.com/dksih/QBM/2015/3/12/1572005271003136/1572005276688384/STEM/a86af4cb5a6e4b31b0ae8f410b0a5617.png?resizew=21)
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10-11高一下·辽宁大连·期中
2 . 设
,则
的最大值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/335deab37f714a626ce3d64738d925e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/186f5b811fbe914d01329be3afc7b1f6.png)
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2014·上海松江·三模
3 . 若集合
且对
中其它元素
,总有
则![](https://img.xkw.com/dksih/QBM/2014/6/5/1571758415781888/1571758421417984/STEM/f215c043e5f94a16886872e0a04289d5.png?resizew=27)
_____ .
![](https://img.xkw.com/dksih/QBM/2014/6/5/1571758415781888/1571758421417984/STEM/01df09b534fa46ef82ce333acf0c7c4b.png?resizew=409)
![](https://img.xkw.com/dksih/QBM/2014/6/5/1571758415781888/1571758421417984/STEM/f27985db38e443a8b38a908ff26952eb.png?resizew=21)
![](https://img.xkw.com/dksih/QBM/2014/6/5/1571758415781888/1571758421417984/STEM/9452a8e180c546ea90aa5139c2426a30.png?resizew=39)
![](https://img.xkw.com/dksih/QBM/2014/6/5/1571758415781888/1571758421417984/STEM/58e7774bd8e5404c80ed09ff9e290ed3.png?resizew=41)
![](https://img.xkw.com/dksih/QBM/2014/6/5/1571758415781888/1571758421417984/STEM/f215c043e5f94a16886872e0a04289d5.png?resizew=27)
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10-11高三·天津南开·阶段练习
4 . 函数
的最小值是______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/955df28782b002a6df98a3d17587d12e.png)
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5 . 当![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
_____ 时,函数
取得最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b01e3fb742e618efdbb87055ae59f765.png)
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9-10高一下·江西·阶段练习
6 . 已知
且
,则
的最小值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3c270c7508ec18bfae26af47763aab7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd98ce07e05c58d83a48d90dfcb28fd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/260ebee6aac1953e8817854487368b5d.png)
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10-11高二下·辽宁抚顺·期末
7 . 在
中
当m=________ 时
面积最大.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce24e5eed633da290839fcaf9d0afdc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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8 . 给定定点
,对任意可能的
,及函数
的图象上的任意可能的点
,
的最小值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71885f023172807ad43f2c9a670aa960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6499f194456d6ac45326a33c74fd781b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4323dcce28ed1206e6ff65600d0dc9e7.png)
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9 . 已知动点
的轨迹方程为
,其中
,则
的最小值为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44ee82573986d4fa6a7ee1b5f397edae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7390d8560864f6127549e9e80c4798f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6ffc52238841c692ce274ce18af7e90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f30d7bd0ad38075177574bfb7ca0df46.png)
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