名校
1 . 若实数x,y满足
,则y的最大值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bdf19ad4665aee45fa63337d726a8e0.png)
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2019-03-22更新
|
329次组卷
|
2卷引用:【市级联考】辽宁省大连市2019年普通高中学生学业水平考试模拟数学试题
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2 . 已知实数
满足
,若
的最大值为
,最小值为
,则实数
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122f7d46e51bec46e7eb5f3fc235ee92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baaa79c2c101deb8595d3b296ad2b73d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eb4f22294f31a9a5cd246126b28493a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee343ed993012ac99860b11bb8cee933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2020-01-11更新
|
195次组卷
|
5卷引用:2011年辽宁省瓦房店市五校高二上学期竞赛数学理卷
名校
解题方法
3 . 已知实数
满足条件
,且
,则
的最小值是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abf0d2c1b2ab89216889ba92a7a92b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff626b7fdcdec8d1b2374b80b6a68d88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://img.xkw.com/dksih/QBM/2017/5/9/1683307283267584/1689604707753984/STEM/6e2d8b72488740809d6af6f9d88304f6.png?resizew=3)
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4 . 向量
,
为坐标原点,动点
满足
,则点
构成图形的面积为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68653fdc5914824f070c4f04eda5c19b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90b5ec4981bc027e708db205086e5a04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e28468af14c93b04d44e155e820fb65e.png)
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