Prove that if $w,z$ are complex numbers such that $|w|=|z|=1$ and $wz\ne -1$, then $\frac{w+z}{1+wz}$ is a real number.

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Prove that if $w,z$ are complex numbers such that $|w|=|z|=1$$and $wz\ne -1 $, then $\frac{w+z}{1+wz}$ is a real number.

Thecarl69 Jan 5, 2020

atlas9 · Answer 1 · 2020-01-05T06:05:16

why don't you look at what guest posted on your last question? you don't have to write up the same exact question twice