Math & Science ⇒ Definition with curly brace

[marcdein]

I would like to write a definition like

\begin{equation}
f(x) = ....
\end{equation}

where on the right-hand-side there is a system of equations with a
curly brace on the left, giving the values of f(x) for various
intervals. How is it possible to do this?

[gmedina]

Hi,

try the cases environment provided by the amsmath package. A little example:

Code: Select all

\documentclass{article} 
\usepackage{amsmath}

\begin{document} 

\begin{equation}
  f(x)=\begin{cases}
    1, & \text{if $x<0$}.\\
    0, & \text{otherwise}.
  \end{cases}
\end{equation}

\end{document}

Read the package documentation and some other relevant information.