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你要求解的方程是z^2=z的共軛吧? 設z=a+bi(b≠0),則z的共軛=a-bi,代入得 a^2-b^2+2abi=a-bi 則a^2-b^2=a 2ab=-b 解得a=-1/2,b=√3/2或b=-√3/2
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