The Linux Network Administrator's Guide (NAG) is a book on setting up and running Unixnetworks. NAG is freely available in electronic form. It was produced by Olaf Kirch[?] and others as part of the Linux Documentation Project with help from O'Reilly and Associates[?]. The second edition was last updated March 2000.
... in two points.)
If the discriminant is negative, then there are two different solutions x, both of which are complex numbers. The two solutions are complex conjugates ...