need help about : Unknown environment tabular

Help
hjp0832
2013-03-12
2013-04-29
  • hjp0832
    hjp0832
    2013-03-12

    There is an error : Unknown environment "tabular"; 
    like this:
    \begin{tabular}{c|c}
    A&B\\
    \hline
    C&D
    \end{tabular}
    ,I want to get this effect : 

     

  • Anonymous
    2013-03-12

    Try using array rather than tabular.

     
  • hjp0832
    hjp0832
    2013-03-13

    but, \hline not work…………..

     

  • Anonymous
    2013-03-16

    You may want to consider using MathJax (www.mathjax.org), the successor to jsMath.  JsMath has been "stable" for several years now (meaning I haven't been actively developing it), whereas MathJax has been quite active.