Copyright © University of Cambridge. All rights reserved.

'A Brief Introduction to the Argand Diagram' printed from

Show menu

Pick a point for $z_1$ such as $2+i$. Move $z_2$ around, and keep a record of the points where $z_3$ is on the x-axis. What do you notice about the coordinates of $z_2$ and $z_3$?

Repeat for some other points.