问题
选择题
复数z=i(i+1)(i为虚数单位)的共轭复数是( )
A.-1-i
B.-1+i
C.1-i
D.1+i
答案
∵z=i(i+1)=i2+i=-1+i,
∴复数z=i(i+1)(i为虚数单位)的共轭复数是-1-i.
故选A.
复数z=i(i+1)(i为虚数单位)的共轭复数是( )
A.-1-i
B.-1+i
C.1-i
D.1+i
∵z=i(i+1)=i2+i=-1+i,
∴复数z=i(i+1)(i为虚数单位)的共轭复数是-1-i.
故选A.