Math & Science ⇒ Equation array - how to add {

[aplrt]

I have four different equations aligned on four separate rows (using the eqnarray environment). I would like to add one large "{" stretching along the entire left hand of my equation array. How do I do that ?

Thanks for any help.

[gmedina]

Hi,

you should not use the eqnarray environment anymore: Avoid eqnarray!

Here are two possibilities:

Code: Select all

\documentclass{report}
\usepackage{amsmath}

\begin{document}

\begin{equation}
  \begin{cases}
    a+b+c\\
    a+b+c\\
    a+b+c\\
    a+b+c\\
  \end{cases}
\end{equation}

\begin{equation}
  \left\lbrace
  \begin{array}{l}
    a+b+c\\
    a+b+c\\
    a+b+c\\
    a+b+c\\
  \end{array}
  \right.
\end{equation}

\end{document}

[aplrt]

Thank you !

[localghost]

Alternative solutions come with the empheq package from the mh bundle.


Best regards and welcome to the board
Thorsten