## table of contents

DERIVATIONS(7) | Derivations of Applied Mathematics | DERIVATIONS(7) |

# NAME¶

derivations - book: Derivations of Applied Mathematics

# DESCRIPTION¶

For various valid reasons, open-source program sources rarely
derive the mathematical formulas they use. A user, nevertheless -- not
wishing to take such formulas on faith -- might wish to see such formulas
*somewhere* derived.

*Derivations of Applied Mathematics* is a book that derives,
and documents, many of the mathematical formulas and methods open-source
programs use, and indeed many of the formulas and methods used in science
and engineering generally. For example, it derives and documents 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.pdf* with a
PDF reader like (for example) evince(1).

# FILES¶

*/usr/share/doc/derivations/derivations.pdf*- the book in PDF

# BUGS¶

The book remains 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 Debian
distributes them. 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) 1983-2021 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.

7 January 2021 | Thaddeus H. Black |