解题方法
1 . 已知平面向量
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5155d4ff2fbef254d632ec03375534db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c6690a6b6cbb77c76225dba586d97a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1afa49dbaa99a0d7a7a6d18b3fe42091.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
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名校
2 . 已知关于
的实系数二次方程
的一根为
(其中
是虚数单位),则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5a94417d0d62715ea4067280d733df.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b800b7d6a688abf8a3018c133cec9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d19ed90fa07e523db60031ab8d53e171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5a94417d0d62715ea4067280d733df.png)
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3 . 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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解题方法
4 . 已知平面向量
,
,若
∥
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5155d4ff2fbef254d632ec03375534db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c6690a6b6cbb77c76225dba586d97a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
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解题方法
5 . 中心位于坐标原点,对称轴为坐标轴的椭圆
的上、下焦点分别为
,右顶点为
,若
的长轴长为
,
,则
的标准方程为_________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48932773034bb6e1651acf140d47822c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ea6f1f07f58e4581b6eec57037eed43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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6 . 已知一圆锥的侧面展开图是圆心角为
且半径为3的扇形,则该圆锥的侧面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0211da37e92f915e781691296578ba0.png)
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2024-06-12更新
|
583次组卷
|
2卷引用:安徽省六安市第二中学河西校区2023-2024学年高一下学期期中考试数学试题
名校
解题方法
7 . 已知向量
,
满足
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd01707e8d32f277b83c007a5b15bd7.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2499020f5de4e68d493c4cad02d12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b113dc271cf51b3018bd1de14edf73ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d61482d161d72e4c3175519c3eddc1f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd01707e8d32f277b83c007a5b15bd7.png)
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解题方法
8 . 化简![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbeee29a83e92ba7d4e6b9694ef11be5.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbeee29a83e92ba7d4e6b9694ef11be5.png)
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解题方法
9 . 二项式
的展开式中,
的系数为__________ .(用数字作答)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4206b668db768803942100b788d50743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
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解题方法
10 . 已知复数
(
是虚数单位),若
所对应的点在复平面的第二象限内,则实数
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de1736cc83eb40e52d056c11a1de5e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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