组卷网>知识点选题>根据复数的几何意义求参数或模的范围
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1 . 设集合eqId922faf20b83449579d99a9c708a94e57,若eqIdd0b7ff9dff15434782b506d41dd5dfa2,则实数eqId70a27b6ddf6b478285353abb3b1f3741的取值范围是________.
2 . 若复数eqId9afeccf9f886452c9844ffa922490ba3在复平面内对应的点在虚轴上.则eqId783c5f01aa1e49b29f88c27d2eca4354(   )
A.eqId37705e1ef6a84bbdbe88433e75932cdfB.eqIda86879ae304449a4a6e6461c485a1f13C.eqIdbeffaaf8d5cd43cf8375210d69fce6beD.eqId5c1c12d4b3ba4aaab6267324ae66c81e
3 . 已知复数eqIdb9b254e2ee704ad9be85d9a3f02389ebeqId23738cd6ec374d66b37f0640d716ff54eqIde9edd995034840cfb557ea415074294aeqId30bb87c3252146748b8c61e7205511b8为虚数单位).
(1)若eqId4f3b088061b74b91800ceb300f29522b为实数,求eqId70a27b6ddf6b478285353abb3b1f3741的值;
(2)若复数eqId5b8c316d72e54e93913d7138d493aa8e在复平面上对应点落在第一象限,求实数eqId70a27b6ddf6b478285353abb3b1f3741的取值范围.
4 . 已知复数eqId1230babf745f44f2901de21b834efff9(eqIdca4ab76061b14cdfbb5b2cb8cf37b9c0).
(1)若eqId03848a3da7554cadba483391c0c31853在复平面中所对应的点在直线eqId8a4ed26fe47842409d88b38cfd3f699d上,求eqId70a27b6ddf6b478285353abb3b1f3741的值;
(2)求eqId2e0e1a7f6a83495a8a114bdd12772e18的取值范围.
5 . 已知复数eqId9f8a6fec025a4a00bc4db48eae38a9d3是实数,eqIdb6e15e51d29a47a7aff44f98b1aafaee是虚数单位.
(1)求复数eqId03848a3da7554cadba483391c0c31853
(2)若复数eqId36220b9f73eb4d2ba3c2d04d8ad0718c所表示的点在第一象限,求实数eqIda4be99d332154d13a4a6ed1ff6444fe7的取值范围.
6 . 已知复数eqId03848a3da7554cadba483391c0c31853满足eqId8477c220256f4ca586690df31650173b,则eqIde2003792bd12420e8aa78a212d357e03为虚数单位eqIdbac0300fdb4b431ba95f49e113993dbb的最大值为(   )
A.3B.4C.5D.6
8 . 在复平面内,若数eqId03848a3da7554cadba483391c0c31853满足eqIdf84aa872ffb84b669ff05894a14b39f2,则eqId4d1a222c80384bd0bb5a26469e7472d7的最大值为__________
9 . 已知复数eqId3650bc45d9b54dc4aa4b4eb2d94b438d,若复数eqId03848a3da7554cadba483391c0c31853对应的点位于复平面的第二象限,则实数eqIda4be99d332154d13a4a6ed1ff6444fe7的取值范围为_________.
10 . 已知关于eqIda9cd3f94eb8045438f75e9daccfa7200的方程eqId4ca4161e273e40e8b4d756813928c559eqIdca4ab76061b14cdfbb5b2cb8cf37b9c0有实数根eqIdaea992e70d4943e49e893817eb885ed7).
(1)求实数eqId70a27b6ddf6b478285353abb3b1f3741eqIdaea992e70d4943e49e893817eb885ed7的值;
(2)若复数eqId03848a3da7554cadba483391c0c31853满足eqIdab056ad2f8084ead91fa94a4696abe4d,求eqId71b066f4ef034bf6b75c671bd9877701的最小值.
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