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...olar form, $r e^{i\theta}$ and $r e^{-i\theta}$. In terms of the [[Argand diagram]], they are symmetric in the $x$-axis. A complex number is its own complex

...worked along the same lines. The best known result is the so-called Argand diagram, in which an imaginary number is represented by its modulus and argument (c

representation of complex numbers, sometimes called the "Argand diagramArgand diagram" , came into use after the publication in 1806