按要求计算:
(1)已知正实数
、
满足
,求
的最大值;
(2)若
时,
恒成立,求
的取值范围.
(1)已知正实数
![](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/f5aed242c5db2984900211ab9e90f9cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e62a78f2cc7d07d64f04ea0ebf7679e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2023-12-20 13:48:36
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适中
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【推荐1】设集合
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(1)求集合
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(2)记
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解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐2】设集合
,
,不等式
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61ad37c0994d39f1219d0e67f42bda83.png)
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(1)当a为0时,求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解答题-问答题
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适中
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【推荐2】在
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【推荐1】如图所示,某广场有一块边长为
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a5d287d0c7e773d2144633f2fd5f79.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff7023ec0f513c7d0ef86859a5ede54.png)
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解答题-问答题
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适中
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【推荐2】已知二次函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0d44326c214c7a5ecc3068a29ec96f.png)
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(1)若函数图象过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29343388ca8b33dc98325e65382b38a0.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29343388ca8b33dc98325e65382b38a0.png)
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