复数z=lg(m^2-2m-2)+(m^2+3m+2)i,若y是实数,求实数m的值
人气：324 ℃ 时间：2020-02-27 00:47:50
解答
m^2-2m-2>0
m^2+3m+2=0 m=-1或m=-2
m=-1 m^2-2m-2=1>0
m=-2 m^2-2m-2=>0
所以 若z是实数,求实数m的值=-1或-2
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