Latex Support

19 June 2014 by Wolfgang Huang, posted in Allgemein, English, latex, latex support

We have been asked to include LaTeX support for our blog. And here it is!

latex6

You may also use display environments equation, align, displaymath, eqnarray, multline, flalign, gather, and alignat.

Here is an example:

latex

The above code is rendered as:


 

At first, we sample f(x) in the N (N is odd) equidistant points around x^*:

    \[ f_k = f(x_k),\: x_k = x^*+kh,\: k=-\frac{N-1}{2},\dots,\frac{N-1}{2} \]

where h is some step.
Then we interpolate points \{(x_k,f_k)\} by polynomial

(1)   \begin{equation*}  P_{N-1}(x)=\sum_{j=0}^{N-1}{a_jx^j} \end{equation*}

Its coefficients \{a_j\} are found as a solution of system of linear equations:

(2)   \begin{equation*}  \left\{ P_{N-1}(x_k) = f_k\right\},\quad k=-\frac{N-1}{2},\dots,\frac{N-1}{2} \end{equation*}

Here are references to existing equations: (1), (2).
Here is reference to non-existing equation (??).


 

For the display environments, equation numbering is automatic, but this may be overridden and the number set explicitly with \tag{..} placed within the display expression.

A number of options may be set for an expression with attribute tags such as size, color, background, align, as arguments of \quicklatex{} placed within the expression:

latex2

renders with green font of 25 pixels height:

QuickLaTeX Example

Compilation of an expression may be suppressed, showing instead the LaTeX source, by preceding the expression with a !.

For mathematical graphs you may use tikzpicture and pgfplots, e.g. :

latex3

compiles to

QuickLaTeX Example

Realized with WP QuickLaTeX.

 

 

 

 

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