已知复数z满足(z-2)i=1+i(i为虚数单位),则z的模为_.
问题描述:
已知复数z满足(z-2)i=1+i(i为虚数单位),则z的模为______.
答
∵复数z满足(z-2)i=1+i(i为虚数单位),∴z=2+
=2+1+i i
(−i)(1+i) −i2
=2+1-i=3-i,∴|z|=
=
9+1
,
10
故答案为:
.
10