已知一个复数，z=1/1+i+i,怎么求z的模？

Question

已知一个复数，z=1/1+i +i,怎么求z的模？

Answer 1

z=1/(1+i)
= (1-i)/2
|z|^2 = (1/2)^2 + (1/2)^2
=1/2
|z| = √2/2