设
、
,
为锐角
内角
的对边,且满足
,若
时,则
面积的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdb1fa4536132c20130440c454e30d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3320a13248a3a1208ff6ee85c9d26f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
更新时间:2020-04-07 11:04:40
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【推荐2】给出下列结论:
①下面程序框图的算法思路源于我国古代数学名著《九章算术》中的“更相减损术”.执行该程序框图,若输入的
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②若用样本数据0,-1,2,3来估计总体的标准差,则总体的标准差估计值为
;
③命题:“若
,则
”的否命题是“若
,则
”;
④已知正数
,
满足
,则
的最大值是
;
⑤已知函数
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,
,且当
时,
.则
在区间
为增函数.
其中结论正确的序号是______ .
①下面程序框图的算法思路源于我国古代数学名著《九章算术》中的“更相减损术”.执行该程序框图,若输入的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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③命题:“若
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④已知正数
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⑤已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bc1ba1c08611beeea6aef9db37a821b.png)
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其中结论正确的序号是
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【推荐3】已知点
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上,点
的坐标为
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为坐标原点,则
的最大值为______________ .
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