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       derivations - book: Derivations of Applied Mathematics


       Understandably, program sources rarely derive the mathematical formulas
       they use.  Not wishing to take the formulas  on  faith,  a  user  might
       nevertheless reasonably wish to see such formulas somewhere derived.

       Derivations  of  Applied  Mathematics  is  a  book  which documents and
       derives many of the mathematical formulas and  methods  implemented  in
       free  software  or  used  in  science  and  engineering  generally.  It
       documents  and  derives  the   Taylor   series   (used   to   calculate
       trigonometrics),  the  Newton-Raphson  method (used to calculate square
       roots), the Pythagorean theorem (used to calculate distances) and  many


       Among  other  ways,  you  can  read the book on your computer screen by
       opening the file /usr/share/doc/derivations/ with  the
       gv(1)  program  under X(7).  To print the book on a standard postscript
       printer, just zcat(1) then lpr(1) the same file.


              the book in postscript format
              the book in PDF


       The book is a work in progress.


       The book and this manpage are written by Thaddeus H.  Black,  who  also
       maintains the Debian package derivations in which they are distributed.
       Users who need to contact the author in  his  role  as  Debian  package
       maintainer  can  reach  him  at <>.  However, most e-mail
       will naturally be about  the  book  itself:  this  should  be  sent  to


       Copyright (C) 1983-2010 Thaddeus H. Black.

       The book, this manpage and the entire derivations distribution are free
       software.  You can redistribute them and/or modify them under the terms
       of the GNU General Public License, version 2.


       gv(1)  [gv],  zcat(1)  [gzip],  psselect(1)  [psutils],  lpr(1)  [lpr],
       octave(1) [octave]