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<h1>MathJax</h1>
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<p><tt>jemdoc-rs</tt> uses <a href="https://www.mathjax.org" target="_blank">MathJax 4</a> for math rendering. MathJax is always included unless the <tt>noeqs</tt> <a href="directives.html" target="_blank">directive</a> is set.
</p>
<h2>Inline Math</h2>
<p>The energy–mass equivalence \(E = mc^2\) and Euler's identity \(e^{i\pi} + 1 = 0\) are inline equations.
</p>
<h2>Display Math</h2>
<p style="text-align:center">
\[
\nabla \times \mathbf{E} = -\frac{\partial\mathbf{B}}{\partial t}
\]
</p><h2>Aligned Equations</h2>
<p>Use LaTeX's <tt>aligned</tt> environment for multi-line equations without numbering:
</p>
<p style="text-align:center">
\[
\begin{aligned}
\nabla \cdot \mathbf{D} &= \rho_f\\
\nabla \cdot \mathbf{B} &= 0\\
\nabla \times \mathbf{E} &= -\frac{\partial\mathbf{B}}{\partial t}\\
\nabla \times \mathbf{H} &= \mathbf{J}_f + \frac{\partial\mathbf{D}}{\partial t}
\end{aligned}
\]
</p><h2>Numbered Equations</h2>
<p>Use LaTeX's <tt>equation</tt> environment to number a block as a single equation:
</p>
<p style="text-align:center">
\[
\begin{equation}
\begin{aligned}
\nabla \cdot \mathbf{D} &= \rho_f\\
\nabla \cdot \mathbf{B} &= 0\\
\nabla \times \mathbf{E} &= -\frac{\partial\mathbf{B}}{\partial t}\\
\nabla \times \mathbf{H} &= \mathbf{J}_f + \frac{\partial\mathbf{D}}{\partial t}
\end{aligned}
\end{equation}
\]
</p><p>Use <tt>align</tt> to number each equation individually:
</p>
<p style="text-align:center">
\[
\begin{align}
\nabla \cdot \mathbf{D} &= \rho_f\label{eq:D}\\
\nabla \cdot \mathbf{B} &= 0\label{eq:B}\\
\nabla \times \mathbf{E} &= -\frac{\partial\mathbf{B}}{\partial t}\label{eq:E}\\
\nabla \times \mathbf{H} &= \mathbf{J}_f + \frac{\partial\mathbf{D}}{\partial t}\label{eq:H}
\end{align}
\]
</p><h2>Cross-Referencing</h2>
<p>The curl equations are Eqs. \(\eqref{eq:E}\) and \(\eqref{eq:H}\).
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