题目内容
A.-1 B.0 C.1 D.2
C ==i+,要使其为纯虚数,
则≠0,=0,∴m=1.
若是纯虚数,则实数m的值为
A.-1
B.0
C.1
D.
-1
0
1
若是纯虚数,则实数m的值为( )
A.-1 B.0 C.1 D.