已知
,
,
是实数,
是虚数单位.
(1)若
,
,求
的模;
(2)若
,
且
,试求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579743813856e2a9183f5ec6eaaefbb2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34b55f716e1e659f20e8cd3810cd714f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daea5d12e3b54e30c9b78db21fdf8f9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a3b8ad884c46a37e403a63274ff8196.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4e861b8edee5e91bb9dd8ed0a21d7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1502b6f3e49a1d0f7a5289687372ab64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9de59a6da1ee210ccf04651ae53275dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
更新时间:2021-08-01 08:35:20
|
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解答题-问答题
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适中
(0.65)
【推荐1】已知
,当θ为何值时,
(1)
;
(2)
对应点关于x轴对称;
(3)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c0fdf3f24dccdf467f482d8d7693e76.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9de59a6da1ee210ccf04651ae53275dd.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90d860cb86e1467ac24010aecfc7a425.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b634c037614766cf1ca4ab6557f23771.png)
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解答题-问答题
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适中
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名校
【推荐2】(1)若
=-
i,求实数a的值;
(2)若复数z=
,求|
+3i|.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02fedb38b46d1c3bd0315962b93dfe68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
(2)若复数z=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a92650b299855b4bdd4fa1eef8b88b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d41042207515dd2e8349c805e6aee400.png)
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解答题-问答题
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【推荐1】已知
,
,对于任意
,均有
成立,试求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03eb3fee6a454cbc01a72cc8afa61ded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d82914524458cff2707d1fce39307ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/593563955a8b396a133672e822b2ac83.png)
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适中
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解题方法
【推荐2】已知复数
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;
(2)求
的最小值.
![](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/39d4733d7f4dd93f60b1c2ea1f10375e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57086af4def74ae9931563b2212b26e3.png)
(1)若纯虚数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a67a742d2a43e907fb1c3a1bdf1d6a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a67a742d2a43e907fb1c3a1bdf1d6a9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95054097445ae06b084beaad666bd2f8.png)
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