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1 . 已知实数
,对
恒成立,则
的取值范围为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b44ff75c0a450bd10443d9e5a19e4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2 . 已知圆
的圆心为点
,直线
与圆
交于
两点,点
在圆
上,且
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb53a5e73f95e3f46a34965c5c0ac73.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab468a0448699f70470931b66a6cfcb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44c273a185a3b6cb29c26455566408ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f44755c5fee4b90266eac73ad47a128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdcc48fa51cc21ef97c330a8f8feb13a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ec9a0ef5960a3c1386b304c5f8fb96d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb53a5e73f95e3f46a34965c5c0ac73.png)
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3 . 小李同学准备从4本讲义类图书与5本试卷类图书中选3本购买,则讲义类图书与试卷类图书至少各选1本的选择方法种数为________ .
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4 . 如图,在
中,
,
为
的中点.将
沿
翻折,使点
移动至点
,在翻折过程中,当
时,三棱锥
的内切球的表面积为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4957406b21df59fdf7fa184752287b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c31a0784b7da3b540019ec11a1aa7c21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52753d89bf58589e2e83b19bd3d140b8.png)
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2024-06-16更新
|
231次组卷
|
2卷引用:安徽省阜阳市太和中学2023-2024学年高一下学期期中教学质量检测数学试题
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5 . 写出
的展开式的第4项的系数:______ .(用数字表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/805039a83c8d4abbe6c74821392cd481.png)
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6 . 在棱长为4的正方体
中,点
是棱
的中点,则四面体
的外接球的体积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c27ae22ad74b412e6d71ec1245f802db.png)
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7 . 已知实数
,且满足
,当
取得最大值时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5154ce098d83928b357e01070762413a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360ff131c51a4ef6745538c18cec92c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dcf600445a2eeef7e18c8feb4b0e8bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8d40e257f9c446b8e30fa841b74bbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5154ce098d83928b357e01070762413a.png)
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8 . 如图,在等腰
中,点
是边
的中点,且
,当
面积最大时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f01c4faacedfe56f5127d6c0cc63cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
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2024-06-16更新
|
163次组卷
|
2卷引用:安徽省蒙城县第六中学2023-2024学年高一下学期阶段性考试数学试卷
名校
9 . 用比例分配的分层随机抽样的方法抽取50个样本,第一层22个,样本平均数为16,第二层28个,样本平均数为18,由此可估计总体平均数为_______ .
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10 . 敬亭山,位于安徽省宣城市北郊,是中国历史文化名山,原名昭亭山,晋初为避帝讳,易名敬亭山.李白在《独坐敬亭山》中写道:众鸟高飞尽,孤云独去闲.相看两不厌,只有敬亭山.相传该诗题写于太白独坐楼(如图(1)).为了测量该楼的高度
(如图(2)),一研究小组选取了与该楼底部
在同一水平面内的两个测量基点
与
,现测得
,
,在
点处测得该楼顶端
的仰角为
则该楼的高度
为_______ m.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c20dce79366a9249f852cdd6b45d836.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/278183c10de47de6e0a8e7f249d2a035.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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