Question

复数辐角主值Z1=3+4i Z2=-2-i 则Z1-Z2的辐角主值是?辐角主值我不是很懂.

Answer 1

45°

Z1=3+4i Z2=-2-i

Z1-Z2=5+5i=5*2^(1/2)*(cos45°+isin45°)

|z|为幅值,写成cosm+isinm,m在0到2π内为辐角主值,辐角则可加2nπ