(跟号三加i)的平方分之1减根号3i等于多少
问题描述:
(跟号三加i)的平方分之1减根号3i等于多少
答
∵1/[(√3+i)^2]=1/(2+2√3i)
=(1-√3i)/[2(1+√3i)(1-√3i)]
=(1-√3i)/8,
∴原式=[(1-√3i)/8]-√3i=(1-9√3i)/8.