Talk:PlanetPhysics/Quadratic Equation
Add topicOriginal TeX Content from PlanetPhysics Archive
[edit source]%%% This file is part of PlanetPhysics snapshot of 2011-09-01 %%% Primary Title: quadratic equation %%% Primary Category Code: 02.10.-v %%% Filename: QuadraticEquation.tex %%% Version: 4 %%% Owner: bloftin %%% Author(s): pahio, bloftin %%% PlanetPhysics is released under the GNU Free Documentation License. %%% You should have received a file called fdl.txt along with this file. %%% If not, please write to gnu@gnu.org. \documentclass[12pt]{article} \pagestyle{empty} \setlength{\paperwidth}{8.5in} \setlength{\paperheight}{11in}
\setlength{\topmargin}{0.00in} \setlength{\headsep}{0.00in} \setlength{\headheight}{0.00in} \setlength{\evensidemargin}{0.00in} \setlength{\oddsidemargin}{0.00in} \setlength{\textwidth}{6.5in} \setlength{\textheight}{9.00in} \setlength{\voffset}{0.00in} \setlength{\hoffset}{0.00in} \setlength{\marginparwidth}{0.00in} \setlength{\marginparsep}{0.00in} \setlength{\parindent}{0.00in} \setlength{\parskip}{0.15in}
% this is the default PlanetMath preamble. as your knowledge % of TeX increases, you will probably want to edit this, but % it should be fine as is for beginners.
% almost certainly you want these \usepackage{amssymb} \usepackage{amsmath} \usepackage{amsfonts}
% used for TeXing text within eps files %\usepackage{psfrag} % need this for including graphics (\includegraphics) %\usepackage{graphicx} % for neatly defining theorems and propositions %\usepackage{amsthm} % making logically defined graphics %\usepackage{xypic}
% there are many more packages, add them here as you need them
% define commands here
\begin{document}
The quadratic formula
\begin{equation}
x \;=\; \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}
\end{equation}
can be used to find the solutions (roots) to a quadratic equation $$ax^2 + bc + c \;=\; 0.$$
\end{document}