1 . 对于任意虚数z,
的共轭一定是______ ,
一定是______ ,
一定是______ ,
一定是______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2fa30ba241d9b987da55046e5269959.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a829e8e7de0dfdc331bb568460938f27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450d38ae1fa6ffdf679f76f9544f8942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f154981a7e3280fa6f40903730013b47.png)
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2 . “
”是“复数
”的______ 条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3612d008f91a5f75b61ae3c73c76ac81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d32d37e72181718279600fc43d5aa532.png)
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3 . 复数的乘方:实数集
中正整数指数的运算律,在复数集
中仍然成立,只不过是要把运算的结果写成复数的代数形式罢了.即若
,m,n是正整数,则
①
; ②
;③
;④
.
复数的除法运算法则:复数的除法,实质上就是分母“实数化”——将分母化为实数,即分子、分母同乘以分母的共轭复数.类似于以前所学的分母“有理化”.于是,我们得到,当
,且
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ce4f6edb26ddfc86b73b0c9443c37e.png)
______________ .
的乘方的性质及其应用:在计算
的高次幂的值时,常常利用
,
简化运算.如计算
时,先将其表示成
与
的积,再将
看成是
,于是得到![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60f086009af2e86309dd8688f1f97c27.png)
___________ .
设
,利用复数的四则运算法则,可以得到
具有下面的性质:
①![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63fdfb84247dffc8fcc6678d34e00dd2.png)
_________ ; ②
; ③
; ④![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12c3c68fb14a6c63bf4d0869c71e6513.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/933093b52cca887f597cbe22a5467b11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f015ed8e497b4394053ddd19683a98f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe639d6800b34618d379dd1fc07d74af.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/336ad2461f5bc92f6f4e6f7d981983c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb3d8634bc85df0a4a04550cca29231c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f193a2071132d8466a161cefcc50c4a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a129424a8b6a52dfd0c6568a266669f.png)
复数的除法运算法则:复数的除法,实质上就是分母“实数化”——将分母化为实数,即分子、分母同乘以分母的共轭复数.类似于以前所学的分母“有理化”.于是,我们得到,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b40d453ac56a449af2c33e31ff49c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bff71e0a1fb212d900f59491248bf3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ce4f6edb26ddfc86b73b0c9443c37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf922fbceea012b857449a80079adc8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0abea11dc55beb34183e5542443c98c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33c7d11e443ee9aeca7e45e6d31afe1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/064b0e7b2494d7341339be6a80961158.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f7ad7ce320f21c4b1f60bc8e381239b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5faa2af08cf50fa3efada313a694d7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c167774cf4c5c67c0af0a5b1cb5a6528.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5faa2af08cf50fa3efada313a694d7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048c2a7371541a685e4d66b38b5c282c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60f086009af2e86309dd8688f1f97c27.png)
设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afc2753abf67f40c8070fda7538cda6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63fdfb84247dffc8fcc6678d34e00dd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0377e5c91846b3a0e71f4cc03ca1c9c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080397a23c2bc5b9d87261e3795d5d68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12c3c68fb14a6c63bf4d0869c71e6513.png)
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21-22高一·全国·课后作业
4 . (1)复数的乘法法则
设
是任意两个复数,那么它们的积![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d355a0ab521aef48518679cf44ea27e7.png)
______________ .
(2)复数乘法的运算律
对于任意
,有
(3)复数的除法法则
(
,且
).
设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7061314deb8ce88af5e218709a4ea17c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d355a0ab521aef48518679cf44ea27e7.png)
(2)复数乘法的运算律
对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7dc24ba4bc1cae38927fcbce43e2419.png)
交换律 | ![]() |
结合律 | ![]() |
乘法对加法的分配律 | ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d241a09a5d9eb0b0bca1d262e8819fd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b40d453ac56a449af2c33e31ff49c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e36363e80eea3ba04190bfb89ace9739.png)
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名校
5 . 设a∈C,a≠0,化简:
=______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/552d6430dad0932fd13525bb10488dc9.png)
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2021-12-20更新
|
299次组卷
|
3卷引用:5.2复数的四则运算 测试卷-2022-2023学年高一数学北师大版(2019)必修第二册
5.2复数的四则运算 测试卷-2022-2023学年高一数学北师大版(2019)必修第二册上海市徐汇中学2020-2021学年高二上学期期末数学试题(已下线)2020年高考天津数学高考真题变式题6-10题
6 . 已知下列命题:
(1)复数
不是实数;(2)当
时,
;(3)若复数
,当且仅当
时,
为虚数;(4)若
时,有
,则
且
.其中真命题的个数是_______ .
(1)复数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eed3d568acf369a315c7ab41c081049.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707aed47159fae11f47e464c548a0b95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6ca7eb28f429391d546d31387f5241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b40b6895776e0807c2baecbc8f33a8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03b011f69dfc5262a3d82f64676739b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554a7f956562e8ea70faf6b7780e1138.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4063994562bb3788c4999b82ff82b3d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/759b29a7b2b3735306f1a650355a7858.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc330a9671536bc46fa244b4ceebcf9.png)
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名校
7 . 已知虚数
是1的一个四次方根,复数
,
,用列举法表示满足条件的
组成的集合为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0214abb30bbf692ba667fbdca05504e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac69e6db1df13ed64756b4f391ae9fac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1100379a4385b9ce064847bc21760adc.png)
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2021-07-20更新
|
183次组卷
|
2卷引用:沪教版(2020) 必修第二册 同步跟踪练习 第9章 9.4复数的三角形式 3 三角形式下复数的乘方与开方
20-21高一·上海·课后作业
8 . 以满足复数
在复平面上对应的点为顶点,构成一个对称实轴的多边形,它的面积等于______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52c85a63a675f07cd35554328b5ccd0.png)
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20-21高一·上海·课后作业
9 . 有下列4个命题:
①若
是复数,且
,则
;
②若
,则
;
③若
,则
是实数;
④若
分别对应点A、B(O为坐标原点)且
,则
,
上述命题中正确的是_________________ .(写出所有正确命题的序号)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc14778010a33f90902ff17b1ec0ac73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b328f39ce6338591382dc7d24a8e456.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f37b264d4805a01b07f06733c4aebb7.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255483db09b1e523a4fcc1f618b98ec4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb3f8babee0c1a081ed7e682351732e1.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96690c74a8672a17cb6428a27d42067.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f2ffa0f313e80b86b66738bd6ed8e59.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/465d1eefa80667ac537de5b68e091508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55b9931cfb6a0ba33cb6e11e569a8cee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/093613ea9152eb78b80f82a05f169735.png)
上述命题中正确的是
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