复变函数ln(-2+3i)和ln(ie)怎么算l是小写
问题描述:
复变函数ln(-2+3i)和ln(ie)怎么算
l是小写
答
ln(-2+3i)=1/2ln(13)+iarg(-2+3i)=1/2ln(13)+i(arc tg(3/-2)+π),ln(ie)=lne+iarg(ie)=lne+iπ/2