组卷网>知识点选题>利用复数的概念求参数
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1 . (1)计算eqId08bfb91a08a54c70abd9b3514d7e6f6f
(2)设复数eqId807fdd7ec7f44a829bbe14914795bd06.(其中eqIdc9a1976ae2ea413fa3ddd9af076ff01d),若eqId65a0ef717b104f44b8586dc561ede3e3是纯虚数,且eqId9099627a891b4431ae97992f1a96ea36在复平面内对应的点在直线eqIde0134976f9634f1cb9fd2c167faa7c1f上,求eqIde750b45eed354fe7be2ea3c2d2f70990
解答题 | 容易(0.94) | 2021·厦门市湖滨中学高一期中
2 . 已知复数eqIdb6ca6491790d49bcbf23ab0b67ea0608,实数eqIda4be99d332154d13a4a6ed1ff6444fe7取什么值时.
(1)复数eqId03848a3da7554cadba483391c0c31853为实数?
(2)复数eqId03848a3da7554cadba483391c0c31853为纯虚数?
3 . 若复数eqId08f0ae0f853e451993bed9ba62624f35为纯虚数,则eqIdd33c7c1015944e2b81de4ff8695de842________.
单选题 | 容易(0.94) | 2021·邵东市第一中学高一期末
4 . 若eqIdca4ab76061b14cdfbb5b2cb8cf37b9c0,且复数eqIdee2d472f6c124ad09306a2cfbb7adbddeqId30bb87c3252146748b8c61e7205511b8为虚数单位)是纯虚数,则eqId783c5f01aa1e49b29f88c27d2eca4354(   )
A.eqId37705e1ef6a84bbdbe88433e75932cdfB.eqIdbeffaaf8d5cd43cf8375210d69fce6beC.eqIdc052ddfbd4524f67a79e0e77c2e5656aD.eqId5c1c12d4b3ba4aaab6267324ae66c81e
5 . 已知eqIdb6e15e51d29a47a7aff44f98b1aafaee为虚数单位,则下列选项中正确的是(    )
A.复数eqId9c50a1ac3b4344de8e760f523d7086dd的模为5;
B.复数eqId9c50a1ac3b4344de8e760f523d7086dd,则eqId025a3b33471e4fa3baa83486856cd2e0在复平面上的点在第四象限
C.复数eqId03746770659747388b9cf5e291c95943是纯虚数,则eqId3c22cfd4c94b43f6b5a16b48fb40e867eqIdd9be87f393c64015b6b7118fa694b1cb
D.若eqId8477c220256f4ca586690df31650173b,则eqIdacc4bb2152b746d88b72103172e750b8的最大值为eqId47eb7f5d137e421597f229247be6a46d
7 . 已知eqId30bb87c3252146748b8c61e7205511b8是虚数单位,若eqId7491ccfacc5547179341974efa859e4c为纯虚数,则实数eqId70a27b6ddf6b478285353abb3b1f3741的值为______
填空题 | 容易(0.94) | 2021·重庆八中高一期中
8 . 设eqId30bb87c3252146748b8c61e7205511b8是虚数单位,若复数eqId05344b0c9a1440758d41ecc7002f8caf是纯虚数,则eqIdd33c7c1015944e2b81de4ff8695de842___________.
9 . 已知复数eqId03848a3da7554cadba483391c0c31853满足eqIdc1055c433f4c46f1bdf7516c0a2cbbd7为纯虚数,且eqId86225bdc24e649d38308e976cf510431为实数;若复数eqIdce0f414744c34c069d520d8a3805e1a2在复平面上对应的点在第四象限,求实数eqIda4be99d332154d13a4a6ed1ff6444fe7的取值范围.
填空题 | 较易(0.85) | 2021·上海曹杨二中高一期末
10 . 已知复数eqId03848a3da7554cadba483391c0c31853满足eqId6829630ca3b5457fbe8de633c4493b1d,且eqId6079deeb8b594c2f8288efc4d839e68d,则eqId0b4fc8a120af4fab80df6ffdcf7c46f8______
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