1 . 复平面上两个点
,
分别对应两个复数
,
,它们满足下列两个条件:①
;②两点
,
连线的中点对应的复数为
,若
为坐标原点,则
的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb8477bcc87b1401970171bf57b9ecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c1fd680a5d355178273c6d6025eb80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4158443ff179d0a71c63e762b502bb6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb8477bcc87b1401970171bf57b9ecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c1fd680a5d355178273c6d6025eb80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69c342b4049af5e211c8552e6f1d3526.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a91fcd06e9139169f341447eaf9617a4.png)
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2 . 代数基本定理:任何一个
次复系数多项式方程
至少有一个复根.由此可得如下推论:
推论一:任何一元
次复系数多项式
在复数集中可以分解为
个一次因式的乘积;
推论二:一元
次多项式方程有
个复数根,最多有
个不同的根.即一元一次方程最多有1个实根,一元二次方程最多有2个实根等.
推论三:若一个
次方程有不少于
个不同的根,则必有各项的系数均为0.
已知
.请利用代数基本定理及其推论解决以下问题:
(1)求
的复根;
(2)若
,使得关于
的方程
至少有四个不同的实根,求
的值;
(3)若
的图像上有四个不同的点
,以此为顶点构成菱形
,设
,
,求代数式
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab009a153dfcc13ba9eb4916c76f8ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b7bff9b2431134f7683a9cc4e68acd.png)
推论一:任何一元
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab009a153dfcc13ba9eb4916c76f8ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
推论二:一元
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
推论三:若一个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0876215b2fd463d151523cd3c6b447.png)
已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14c686bfce270ec65d068555d1866ff.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dadabea3f5008d97a32382752e62bdd8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec4e65c4c043edef8084b292675395c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcecb855c13987b207aec2db73c9ec5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c82a10b4f0c9323d726804c89dd9548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc04eee630e386f7be4ac709ff4e16c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df74fc4cedb204eb6dcce64b706e99c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed0c942fae0e9dd2d219ad8269511898.png)
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3 . 著名的费马问题是法国数学家皮埃尔.德费马(1601—1665)于1643年提出的平面几何最值问题:“已知一个三角形,求作一点,使其与此三角形的三个顶点的距离之和最小.”费马问题中的所求点称为费马点,已知对于每个给定的三角形,都存在唯一的费马点,当
的三个内角均小于
时,则使得
的点
即为费马点.当
有一个内角大于或等于
时,最大内角的顶点为费马点.试根据以上知识解决下面问题:
(1)若
,求
的最小值;
(2)在
中,角
所对应的边分别为
,点
为
的费马点.
①若
,且
,求
的值;
②若
,求实数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231b861d6d1f1d0b9f52b041cb40eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39fd1066cf8552f50c52beed433f69c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231b861d6d1f1d0b9f52b041cb40eb62.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b54286fe72b8305272c36c0a3a8d2bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0b4831a51839ce9c85429ece0f05ba7.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/682bfabebd7d02eca440089344246da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08ce80e91fdf435a8e3ec05be990e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b8f8a1e38db0e55b9b1934569b24e74.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b5698a33ca72f0bb26c42c49bb8d8de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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4 . 如果曲线
存在相互垂直的两条切线,称函数
是“正交函数”.已知
,设曲线
在点
处的切线为
.
(1)当
,
时,是否存在直线
满足
,且
与曲线
相切?请说明理由;
(2)如果函数
是“正交函数”,求满足要求的实数a的集合
;
(3)若对任意
,曲线
都不存在与
垂直的切线
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/749c140afe3f0d42e3cad85909d63938.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06dfc9e95cade14ae9b7fc89519a2dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cfc27d13b4d07ade4729b481cc95735.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/534180efa9c8ffc5ac7cf7f2f035d11c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce08b357f11ef44c3e8207ac574422a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)如果函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(3)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5d35db106c861738bceccd993a298a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
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5 . 关于函数
,下列判断正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e8befa889ce2896b8cd384758e4c0d.png)
A.![]() ![]() |
B.函数![]() |
C.对![]() ![]() ![]() |
D.对任意两个正实数![]() ![]() ![]() ![]() |
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6 . 已知函数
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd1e5c6966e450f059f63ffe924382f6.png)
A.函数![]() |
B.函数![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若方程![]() ![]() |
您最近一年使用:0次
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|
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|
3卷引用:江西省宜春市丰城中学2023-2024学年高一下学期第三次段考(5月月考)数学试题
名校
7 . 已知函数
,若
,则a,b,c的大小关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/558595e25f5ad4a2581cd9e1bcb67abd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53ef508a4d22bfe22f6af7d1463c9e7f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-06-08更新
|
551次组卷
|
5卷引用:江西省宜春市丰城中学2023-2024学年高一下学期第三次段考(5月月考)数学试题
江西省宜春市丰城中学2023-2024学年高一下学期第三次段考(5月月考)数学试题山西省2024届高三下学期适应性考试二数学试题海南省部分学校2024届高三下学期高考考前押题(二)数学试题(已下线)【人教A版(2019)】高二下学期期末模拟测试B卷(已下线)函数-综合测试卷A卷
名校
解题方法
8 . 已知定义域为
的函数
满足
,给出以下结论:①
;②
;③
是奇函数;④存在函数
以及
,使得
的值为
.所有正确结论的序号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a7fe4af08e4df7d7cb9b49c12b51990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01bea8bf593f594c51fc7cc547482bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f5704be464d81a1c74c626bb4752f75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91421e7703d87617f50270178decd18a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a58d5cf4a3c02843054e9bde8ca20d.png)
A.①② | B.①③ | C.①③④ | D.①②④ |
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2卷引用:江西省宜春市丰城中学2023-2024学年高一下学期第三次段考(5月月考)数学试题
23-24高一下·上海·期末
解题方法
9 . 对于任意的复数
,定义运算
.
(1)集合
,
,
,
均为整数
,试用列举法写出集合
;
(2)若
,
为纯虚数,求
的最小值;
(3)直线
上是否存在整点
(坐标
,
均为整数的点),使复数
经运算
后,
对应的点也在直线
上?若存在,求出所有的点;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db31fcead8e3aff98a0d7712bff575f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/159a0230bb4b7c9d266b73b0afaf481e.png)
(1)集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6ba9a3a3b8a765dd2904fcdd22f2a76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5319687dd89eaf09f8f875803724988f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92d6ca793cbabf3e22b7410f957a1fe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb10bf3211e7b87b12823aa71f06ffba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ca8bdc812627d925f00ed7c145d696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48a8594bf5bf74a99efa8c17db231034.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c86202ddf220de1d8f5dc2c72cbe5b9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c042c0c7e253a65f770583c5c6696770.png)
(3)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f716e26c3a061266336f9a5d2a3fcea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd9e4a7572ce9d7f8041b6ec5a3c3ade.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c86202ddf220de1d8f5dc2c72cbe5b9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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10 . 人们把一元三次方程的求根公式称为卡尔达诺公式,该公式为:对不完全的一元三次方程
的三个根分别为:
,
,
,其中
,
.
(1)求
的三个根;
(2)求
的三个根.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5dd275a6062b21f9c3e9155c7e0ba62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a3ea1dcc88666b3860a1b706209e19d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/298c86367ad93cb50ded80b69bfed5de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3020c8a9c46c7dcae57ac827feeeb98f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca909e9f398d9b53bcf5fe1bceb0db1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c789a7cd7ac2b8b96dc879c6c8161ee4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb23fcb39475ffaa01c1a2fcfe1b19f0.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87008ef398e12cbce656eabe57e17876.png)
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