真题
1 . 已知虚数
,其实部为1,且
,则实数
为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a2f912dba0e17b3b87244e131e4b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
2 . 已知复数
的实部为0,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/982c2cd8fd33539bd313fe3ea373e6c0.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb0d037cbc7584aefec1e2ffe58d0971.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/982c2cd8fd33539bd313fe3ea373e6c0.png)
您最近一年使用:0次
2024-06-07更新
|
1795次组卷
|
5卷引用:广东省广州市2024届普通高中毕业班综合测试(二)广州二模数学试卷
名校
3 . 棣莫弗定理:若
为正整数,则
,其中
为虚数单位,已知复数
, 则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b890700d682af673c0dd9f143a27ba7.png)
____ ,
的实部为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f679d4c4b3686ee3602923cda586377.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579743813856e2a9183f5ec6eaaefbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f9c0e62c8d20f29175d3a633726898c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b890700d682af673c0dd9f143a27ba7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52c5f55103d035451be62f54c0e12d05.png)
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4 . 复数
满足
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89fafca28e5b438552bebe9604edd4c1.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad34eb59bbd12c445d4233aee590d3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cae7491f2810f45aef8951bd2f081331.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89fafca28e5b438552bebe9604edd4c1.png)
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5 . 平面内
条直线可以将平面分成若干块区域,记分成的区域数的最大值为
,则数列
的前
项和为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/099a64d86bd0b4602578d910322adc1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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6 . 已知
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad70e22988934ff64fe3dde04a43fa4.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1770ffb9b0afca104e0dd75349c8216c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8646eaa05bfde39d27813c301a076420.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad70e22988934ff64fe3dde04a43fa4.png)
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解题方法
7 . 为了考察某种药物预防疾病的效果,进行动物试验,得到如下图所示列联表:
取显著性水平
,若本次考察结果支持“药物对疾病预防有显著效果”,则
(
)的最小值为___________ .
(参考公式:
;参考值:
)
药物 | 疾病 | 合计 | |
未患病 | 患病 | ||
服用 | ![]() | ![]() | 50 |
未服用 | ![]() | ![]() | 50 |
合计 | 80 | 20 | 100 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ead9d6ff51996f3ebace6f212e11a9e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2031e0639454058d98d6d0a45480c9dc.png)
(参考公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dc70b5e1ba847b9918a50f67bfbe8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a93888a85455e51d2f0d21e34263d7b5.png)
您最近一年使用:0次
8 . 已知
是虚数单位,复数
是纯虚数,则实数
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b240e3590fbdc76843358fe00c3f9c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
解题方法
9 . 已知复数
与
在复平面内用向量
和
表示(其中
是虚数单位,
为坐标原点),则
与
夹角为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b80360cbdda38f0745b998dfa872a73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0591964e11722ed36a096694935a6837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
您最近一年使用:0次
2024-04-19更新
|
1765次组卷
|
3卷引用:浙江省天域全国名校协作体2023-2024学年高三二模数学试题
名校
解题方法
10 . 已知复数
,
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/575c1e258d8206bf4c4b26826bb01288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de971553ea8a66d7849b138a4a0625c5.png)
您最近一年使用:0次