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derivations_0.53.20120414-2_all **NAME**

derivations - book: Derivations of Applied Mathematics

**DESCRIPTION**

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 others.

**READING** **THE** **BOOK**

Among other ways, you can read the book on your computer screen by opening the file
__/usr/share/doc/derivations/derivations.ps.gz__ 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.

**FILES**

__/usr/share/doc/derivations/derivations.ps.gz__
the book in postscript format
__/usr/share/doc/derivations/derivations.pdf.gz__
the book in PDF

**BUGS**

The book is a work in progress.

**AUTHOR**

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 <thb@debian.org>. However, most
e-mail will naturally be about the book itself: this should be sent to
<thb@derivations.org>.

**COPYLEFT**

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.

**SEE** **ALSO**

**gv**(1) [__gv__], **zcat**(1) [__gzip__], **psselect**(1) [__psutils__], **lpr**(1) [__lpr__], **octave**(1) [__octave__]