高中一道简单复杂的数学题
Z2=cosa+isina
Z2^2=cos2a+sin2a
z 1 =√3+I = 2(cosπ/6+isπ/6)
z 1 *(Z2)2 = 2[COS(2A+π/6)+ISIN(2A+π/6)]是一个虚部为负的纯虚数,所以
2a+π /6=3π /2
a=2π /3
Z2=-1/2+i√3/2
Z2^2=cos2a+sin2a
z 1 =√3+I = 2(cosπ/6+isπ/6)
z 1 *(Z2)2 = 2[COS(2A+π/6)+ISIN(2A+π/6)]是一个虚部为负的纯虚数,所以
2a+π /6=3π /2
a=2π /3
Z2=-1/2+i√3/2