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1、3。1。1 数系的扩充和复数的概念 1.下列结论错误的是()A。自然数集是非负整数集 B。实数集与复数集的交集是实数集 C.实数集与虚数集的交集是0 D.纯虚数集与实数集的交集为空集 2.3i2+7i的实部为_,虚部为_。3.如果复数-a+2i(aR)的实部与虚部互为相反数,则a的值等于_。4。若y为纯虚数,x为实数,且满足1+y=2x1+2i,则x=_,y=_。5.已知复数z=m(m-1)+(m2+2m-3)i,当实数m取什么值时,复数z是(1)零;(2)纯虚数.尊敬的读者:本文由我和我的同事在百忙中收集整编出来,本文档在发布之前我们对内容进行仔细校对,但是难免会有不尽如人意之处,如有疏漏之
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