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<?xml version="1.0" encoding="UTF-8"?>
<book xml:id="simple_book" xmlns="http://docbook.org/ns/docbook" version="5.0">
<title>Very simple book with mathematical formulas</title>
<chapter xml:id="chapter_1">
<title><latex xmlns="http://forge.scilab.org/p/jlatexmath">\JLaTeXMath</latex></title>
<para>
The Java package <latex xmlns="http://forge.scilab.org/p/jlatexmath">\JLaTeXMath</latex> combining with FOP gives the possibility to write <latex xmlns="http://forge.scilab.org/p/jlatexmath">\LaTeX</latex> commands in Docbook.
</para>
<para>
This example has been written in using the CM Unicode fonts available at http://sourceforge.net/projects/cm-unicode/ .
</para>
<para>
For example :
</para>
<equation>
<latex align="center" xmlns="http://forge.scilab.org/p/jlatexmath">
<![CDATA[
\phi_n(\kappa) = \frac{1}{4\pi^2\kappa^2} \int_0^\infty \frac{\sin(\kappa R)}{\kappa R} \frac{\partial}{\partial R}\left[ R^2\frac{\partial D_n(R)}{\partial R}\right]\,dR
]]>
</latex>
</equation>
<para>
We can use an example block :
<example>
<latex xmlns="http://forge.scilab.org/p/jlatexmath">
<![CDATA[
\det\begin{bmatrix}
a_{11}&a_{12}&\cdots&a_{1n}\\
a_{21}&\ddots&&\vdots\\
\vdots&&\ddots&\vdots\\
a_{n1}&\cdots&\cdots&a_{nn}
\end{bmatrix}\overset{\mathrm{def}}{=}\sum_{\sigma\in\mathfrak{S}_n}\varepsilon(\sigma)\prod_{k=1}^n a_{k\sigma(k)}
]]>
</latex>
</example>
</para>
<para>
The formulas can be in displaystyle <latex xmlns="http://forge.scilab.org/p/jlatexmath">\sum_{n=1}^{+\infty}\frac1{n^2}=\frac{\pi^2}{6}</latex> or in textstyle <latex style="text" xmlns="http://forge.scilab.org/p/jlatexmath">\sum_{n=1}^{+\infty}\frac1{n^2}=\frac{\pi^2}{6}</latex>.
</para>
<para>
Several centered formulas with gather environment :
</para>
<equation>
<latex align="center" xmlns="http://forge.scilab.org/p/jlatexmath">
<![CDATA[
\begin{gather}
a x + b = 0 \\
a x^2 + b x + c = 0 \\
a x^3 + b x^2 + c x + d = 0
\end{gather}
]]>
</latex>
</equation>
<para>
Several formulas with flalign environment :
</para>
<equation>
<latex align="center" xmlns="http://forge.scilab.org/p/jlatexmath">
<![CDATA[
\begin{flalign}
10xy^2+15x^2y-5xy & = 5\left(2xy^2+3x^2y-xy\right) = \\
& = 5x\left(2y^2+3xy-y\right) = \\
& = 5xy\left(2y+3x-1\right)
\end{flalign}
]]>
</latex>
</equation>
<para>
Several formulas with split environment :
</para>
<equation>
<latex align="center" xmlns="http://forge.scilab.org/p/jlatexmath">
<![CDATA[
\begin{split}
10xy^2+15x^2y-5xy & = 5\left(2xy^2+3x^2y-xy\right) = \\
& = 5x\left(2y^2+3xy-y\right) = \\
& = 5xy\left(2y+3x-1\right)
\end{split}
]]>
</latex>
</equation>
<para>
Splitting a long formula on several lines with multline environment :
</para>
<equation>
<latex align="center" xmlns="http://forge.scilab.org/p/jlatexmath">
<![CDATA[
\begin{multline}
\left(1+x\right)^n = 1 + nx + \frac{n\left(n-1\right)}{2!}x^2 +\\
+ \frac{n\left(n-1\right)\left(n-2\right)}{3!}x^3 +\\
+ \frac{n\left(n-1\right)\left(n-2\right)\left(n-3\right)}{4!}x^4 + \dots
\end{multline}
]]>
</latex>
</equation>
<para>
An array with vertical and horizontal lines and different sizes of font :
</para>
<equation>
<latex align="center" xmlns="http://forge.scilab.org/p/jlatexmath">
<![CDATA[
\begin{array}{|c|l|||r|c|}
\hline
\text{Matrix}&\multicolumn{2}{|c|}{\text{Multicolumns}}&\text{Font sizes commands}\cr
\hline
\begin{pmatrix}\alpha_{11}&\cdots&\alpha_{1n}\cr\hdotsfor{3}\cr\alpha_{n1}&\cdots&\alpha_{nn}\end{pmatrix}&\Large \text{Large Right}&\small \text{small Left}&\tiny \text{tiny Tiny}\cr
\hline
\multicolumn{4}{|c|}{\Huge \text{Huge Multicolumns}}\cr
\hline
\end{array}
]]>
</latex>
</equation>
</chapter>
</book>
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