设i为虚数单位,则复数4+3ii=()A.-4-3iB.-4+3iC.4+3iD.3-4i-数学

题目简介

设i为虚数单位,则复数4+3ii=()A.-4-3iB.-4+3iC.4+3iD.3-4i-数学

题目详情

设i为虚数单位,则复数
4+3i
i
=(  )
A.-4-3iB.-4+3iC.4+3iD.3-4i
题型:单选题难度:偏易来源:不详

答案

复数class="stub"4+3i
i
=
-i(4+3i)
-i•i
=3-4i.
故选D.

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