已知复数z满足z+7/z∈R,又|z-1|+|z-3|=4,求复数z.
问题描述:
已知复数z满足z+
∈R,又|z-1|+|z-3|=4,求复数z. 7 z
答
因为z+7z∈R,所以.z+7z=z+7z,则.z+7.z=z+7z,所以z−.z+7z−7.z=0,即(z−.z)(1−7z.z)=0,所以z−.z=0或者z.z=7,即z∈R(z≠0)或|z|2=7.(1)当z∈R(z≠0)时,|z-1|+|z-3|=4,所以z=4或者z=0(舍去)...