MathJax

MathJax is software for typing formulas . It uses the Latex style, making the source of the web-article compatible with style of a scientific journal.



Dollar
In MathJax, as in Latex, many things are controlled by dollars. Typing the sign of dollar, id est, \( \\) \(, switches on the mathematics mode; then, the characters are interpreted as mathematical symbols or as the Latex commands. If the dollar appears again, it switches the control back to the normal typesetting. In such a way, to type some math and then some plain text, one needs at least two dollars. The results may look like this: \)\int_a^b f(x)\mathrm d x\(.

Typing two dollars at once, id est, \) \\( \\) \(, reserves the special line for the equation. After to finish this equation, the double-dollar should be repeated again. The result may look as this: $$\int_a^b f(x)\mathrm d x\$$

nomathjax
In Wo, MathJax is supported by default. It can be desactivated with command nomathjax, just type \)<\! \rm nomathjax \!>\(.

After such a command, the dollars loss their usual value and are interpreted as ordinary characters; they can be typed in any amount without any special effect. In such a way, you may print so many dollars as you need.

Then the MathJax can be activated again with command \)<\! \rm /nomathjax \!>$. After such a command, the dollars get back their normal meaning and ability to switch-on and switch-off the math mode.

Temporal suppressing of MathJax is essential at the including of some code in Latex and/or in PHP, where dollars are important.

Numbering of formulas
The similarity with Latex appears in the numbering of formulas. The test of equation references is suggested at http://cdn.mathjax.org/mathjax/latest/test/sample-eqrefs.html . Similar examples are shown below.

Here is a labeled equation: $$f_1(x)=\frac{x+1}{\sqrt{1-x^2}}\label{ref1}\$$ it is labeled as "ref1", and here is reference to ref1: \ref{ref1}.

In the similar way, one may label another equation, $$f_2(x)={x+2\over\sqrt{1-x^2}}\label{ref2}\$$ it is labeled as "ref2", and here is reference to ref2: \ref{ref2}. The equations should be referred one by one, for example, \ref{ref1}, \ref{ref2}. Attempts to cite them both at once is interpreted as an error \ref{ref1,ref2}, and marked with red.

Numbering of formulas, again
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The similarity with Latex appears in the numbering of formulas. The test of equation references is suggested at http://cdn.mathjax.org/mathjax/latest/test/sample-eqrefs.html . Similar examples are shown below.

Here is a labeled equation:

$$f_1(x)=\frac{x+1}{\sqrt{1-x^2}}\label{eq:ref1} $$

or

\[ f_1(x)=\frac{x+1}{\sqrt{1-x^2}}\label{eq:ref2} \]

or

\( f_1(x)=\frac{x+1}{\sqrt{1-x^2}}\label{eq:ref3} \)

or

$$ f_1(x)=\frac{x+1}{\sqrt{1-x^2}}\label{eq:ref5} $$ it is labeled as "ref1", and here is reference to ref1: \eqref{eq:ref1}.

\refeq{eq:ref1}.

In the similar way, one may label another equation, $$f_2(x)={x+2\over\sqrt{1-x^2}}\label{eq:ref4}$$ it is labeled as "ref2", and here is reference to ref2: \eqref{eq:ref4}. The equations should be referred one by one, for example, \ref{ref1}, \ref{ref2}. Attempts to cite them both at once is interpreted as an error \ref{ref1,ref2}, and marked with red.

Keywords
Latex, Mathematics, Science