So what exactly is a complex number?

[richyjsm at gmail.com]

On Sep 2, 6:13 am, Grzegorz S odkowicz <jerg... at wp.pl> wrote:

> In fact, a proper vector in physics has 4 features: point of
> application, magnitude, direction and sense.

so whats the "point of application" of the sum of two vectors?  Do
tell.