Question

復(fù)數(shù)

1-i

(1+i)2

（i是虛數(shù)單位）的虛部為______．

Answer 1

∵復(fù)數(shù)

1-i

(1+i)2

=

1-i

2i

=-

1

2

-

1

2

i
故復(fù)數(shù)

1-i

(1+i)2

（i是虛數(shù)單位）的虛部為-

1

2

故答案為：-

1

2