
$l2h_cache_key = q/ some

$$ \chi^2 = \sum_{i=1}^N
          \left(y_i - (a + b x_i)
	  \over \sigma_i\right)^2 $$/;
$l2h_cache{$l2h_cache_key} = q|
some

<br />

<div class="mathdisplay" align="CENTER"><!-- MATH
 \begin{displaymath}
\chi^2 = \sum_{i=1}^N
          \left(y_i - (a + b x_i)
	  \over \sigma_i\right)^2
\end{displaymath}
 -->[[Image:tex_1.png\|179px\|\begin{displaymath}\chi^2 = \sum_{i=1}^N
\left(y_i - (a + b x_i)
\over \sigma_i\right)^2 \end{displaymath}]]</div>

<br clear="ALL" />|;

$l2h_cache_key = q/ some

tex \TeX/;
$l2h_cache{$l2h_cache_key} = q|
some

tex <span class="logo-TeX">T<small>E</small>X</span>|;
1;