=

Z+ 1/z=z+|z|/z=z+z' (remember that z' is the * * * yoke complex number of z).

Suppose z=a+bi, then 1/t

=

A+bi+a-bi=2a is a real number. So t=z/( 1+z? ) is also true.

This topic can also be directly set to z=a+bi, and then simplified according to the known conditions, but that will be a little troublesome:)