在复平面内复数
,
所对应的点为
,
,
为坐标原点,
是虚数单位.
(1)
,
,计算
与
;
(2)设
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/368f9e12546277731776041c73dbe58c.png)
,求证:
,并指出向量
,
满足什么条件时该不等式取等号.
![](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/4bb8477bcc87b1401970171bf57b9ecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c1fd680a5d355178273c6d6025eb80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c552c2a57bd5d204c2d700ef1112554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1435039f4745c7e6fbc266636e414705.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6da4e6752d8c8a0705194f2b2f16ab5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f75805768bce2c1699aa5f9e33adbf4.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0bf9b2a7378e73e9fd06c693bfda07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/368f9e12546277731776041c73dbe58c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d3995815fb78d6abdacc08145a89b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b49f7ebf36aba9ca166881222ca6aa71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a30deb1f343048675b9b231620369668.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1640d3fff861f45c5eb4019943b000f.png)
23-24高一下·山东枣庄·期中 查看更多[2]
更新时间:2024-05-29 09:50:19
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相似题推荐
解答题-问答题
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适中
(0.65)
名校
【推荐1】在正三棱台
中,
是边长为
的等边三角形,且
.已知
,
,
,
分别是线段
,
的中点,当直线
上一动点
在射线
上时,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/45fdfe37-a174-4faf-9513-6a3beda731bf.png?resizew=247)
(1)证明:
平面
;
(2)求直线
与平面
所成角的正弦值;
(3)连接
,
,已知点
在平面
投影是
,平面
是一个分别以
,
作为
,
轴的复平面,
.当
时,请直接写出
的虚部(不要求写出过程).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c6e8a07dcdeec1d196fd31a616d25d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed78b13131d8ce1c65091b6b259a1082.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d84cdf3d579140b8e5b6f9f4efcc23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efac9930e80e002a537bc0a6da526866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192f4f9446c954a291f779d963f90257.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfc386b9493102a587025523dc69ccba.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/16/45fdfe37-a174-4faf-9513-6a3beda731bf.png?resizew=247)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f6d39135a2f8472d66ea00eda3b13ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b94e97d085cea077cb82a0b7d2f523e.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b63d2504bd3ecce8c10560b142356f.png)
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适中
(0.65)
【推荐2】已知复数z在复平面内对应的点A位于第一象限,且
.
(1)求z;
(2)设
,
在复平面内对应的点分别为B,C,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7d165cb62b3157169f32fb0d297120a.png)
(1)求z;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ea3cc01ce7266cdf0fd73fd50d23c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd734caf3253274b76d59f6359bc51e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d54d09ef825305de83671448a3dea21.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
解题方法
【推荐2】已知复数z满足
,
.
(1)求
;
(2)设
,
,
在复平面内对应的点分别为A,B,C,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad34eb59bbd12c445d4233aee590d3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83f082b42a201aa68fe5ab5fb4868ad4.png)
(1)求
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(2)设
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您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐3】已知向量
,
,
,在复平面中,i为虚数单位,复数
对应的点为
.
(1)求
;
(2)若
,求
在
上的投影向量
.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a1a646c9995c40001ace6e4e80ebe88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb8477bcc87b1401970171bf57b9ecb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d8b3f66119c2ce542984d12eb2b6b77.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a40d2cf43fce0c99dff3470d554eb8.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/d1b8a88a16125366536cb4ad658e0cf1.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐1】设
是关于x的方程
的一个根.
(1)求实数
的值;
(2)求方程的另一个根
及
的值;
(3)已知
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed3a7e1ea06b2eb0061ad24605eb7fdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783a7b78d895784b4af75b962bd40f07.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd5371a6f0f82c65dd22f75f8b807c1.png)
(2)求方程的另一个根
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82359e2d8f541e44c6be90a390f33ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2569dffd93366460c77917c319dfe91c.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c2656f52df6a3ec066d8e4dd42e3fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bbc700288f7c5b256d5b8af5d620fc0.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐2】设z是虚数,在平面直角坐标系xOy中,z,
,
对应的向量分别为
,
,
.
(1)证明:O,B,C三点共线;
(2)若
,求向量
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d41042207515dd2e8349c805e6aee400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1245ed74a632317d3a0a106aa9d02eaf.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef8337706c550bc095d7a2bd872221a1.png)
(1)证明:O,B,C三点共线;
(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e973a6cfc29bbeade6d6654d286b5c22.png)
您最近一年使用:0次