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    <title>Friks (Friks)</title>
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      <title>latex 测试</title>
      <description>&lt;p&gt;行级公式：$E=mc^2$&lt;/p&gt;

&lt;p&gt;块级公式：$$\sum_{i=1}^{n} i = \frac{n(n+1)}{2}$$&lt;/p&gt;

&lt;p&gt;分数与根号：$$\frac{-b \pm \sqrt{b^2-4ac}}{2a}$$&lt;/p&gt;

&lt;p&gt;微积分符号：$$\int_a^b f(x) dx$$&lt;/p&gt;

&lt;p&gt;矩阵渲染：$$\begin{pmatrix}1 &amp;amp; 2 \\ 3 &amp;amp; 4\end{pmatrix}$$&lt;/p&gt;

&lt;p&gt;多行对齐：$$\begin{align*} x &amp;amp;= y + 1 \\ z &amp;amp;= x + 2 \end{align*}$$&lt;/p&gt;

&lt;p&gt;特殊字符：$$\alpha, \beta, \gamma, \infty$$&lt;/p&gt;</description>
      <author>Friks</author>
      <pubDate>Fri, 03 Apr 2026 09:47:37 +0000</pubDate>
      <link>https://forum.sidereus-ai.com/topics/40</link>
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