若复数(m-i)/(2+3i)是纯虚数,则实数m的值为 日期:2013-02-24 00:10:54 人气:1 若复数(m-i)/(2+3i)是纯虚数,则实数m的值为 解答: 由?m-i?/?2+3i? =?m-i??2-3i?/[?2+3i??2-3i?] =[?2m-3?-?2+3m?i]/13 ∴2m-3=0 ∴m=3/2