I suggest that you post a link to that video. In the meantime.
It is true that \(\displaystyle |-z|=|z|,~z\cdot \overline{z}=|z|^2~\&~\frac{z_1}{z_2}=\frac{z_1\cdot\overline{z_2}}{|z_2|^2}\)
What does it take for \(\displaystyle \frac{z_1\cdot\overline{z_2}}{|z_2|^2}\) to be purely imaginary?
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.