实数 m^2-1=0 m=-1或m=1
虚数 m^2-1≠0 m≠1且m≠-1
纯虚数 m^2+m-2=0且m^2-1≠0 m=-2
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当m为何数时,复数z=m^2+m-2+(m^2-1)i为实数·虚数·纯虚数
当m为何数时,复数z=m^2+m-2+(m^2-1)i为实数·虚数·纯虚数
数学人气：424 ℃时间：2019-11-18 04:35:06
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