Here you can find a trial on how it is possible to insert LaTeX formulae in html pages.
Let consider a linear system
![\[\dot{\boldsymbol{x}}=\boldsymbol{Ax}+\boldsymbol{Bu}\]](http://www.monteriu.com/blog/wp-content/ql-cache/quicklatex.com-2493bd2118b187fad6f8acf9c153a8cc_l3.png "Rendered by QuickLaTeX.com")
where 
and 
.
At first, we sample 
in the 
( is odd) equidistant points around 
:
![\[ f_k = f(x_k),\: x_k = x^*+kh,\: k=-\frac{N-1}{2},\dots,\frac{N-1}{2} \]](http://www.monteriu.com/blog/wp-content/ql-cache/quicklatex.com-8200fc2e771ea096c83fe32b1a5c24b1_l3.png "Rendered by QuickLaTeX.com")
where 
is some step.
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