Use the "Add image" toolbar button to add an image to your DocBook document. The image file pointed to must have a ".mml" file extension and must contain valid MathML presentation markup. Example:

<figure>
  <title>Proving ...</title>
  <mediaobject>
    <imageobject>
      <imagedata fileref="equations/eq1.mml"/>
    </imageobject>
  </mediaobject>
</figure>

Figure 3. Proving the Pythagorean theorem

Or, use the "Add MathML equation" tool bar button to embed MathML presentation markup in your DocBook 5 document. See also XMLmind XML Editor - Support of MathML 2.0. Example:

<inlineequation><math display="inline" xmlns="http://www.w3.org/1998/Math/MathML">
  <mrow>...</mrow>
</math></inlineequation>

Use the "Add image" toolbar button to add an image to your DocBook document. The image file pointed to must have a ".tex" file extension and must contain mathematical formulas written in LaTeX, which are supported by JLaTeXMath. Example:

<figure>
  <title>Excerpts ...</title>
  <mediaobject>
    <imageobject>
      <imagedata fileref="equations/eqA.tex"/>
    </imageobject>
  </mediaobject>
</figure>

Figure 4. Excerpts from "User’s Guide for the amsmath Package (Version 2.1)"

Use the Edit tool in XMLmind XML Editor - Online Help to insert an inlineequation(tex), informalequation(tex) or equation(tex) element template in your DocBook 4.5 or 5+ document. The newly inserted equation has a ready to use <mathphrase role="tex"> child element. Example:

<inlineequation><mathphrase role="tex">
\(\lim_{h \rightarrow 0 } \frac{f(x+h)-f(x)}{h}\)
</mathphrase></inlineequation>