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# 数学公式示例
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## 基础公式
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这是一个行内公式示例：$E=mc^2$
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## 复杂公式
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块级公式示例：
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$$\int_{-\infty}^\infty e^{-x^2} dx = \sqrt{\pi}$$
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## 矩阵示例
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$$\begin{pmatrix}
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1 & 2 \\
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3 & 4
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\end{pmatrix}$$
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## 方程组
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$$
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\begin{cases}
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x + y = 5 \\
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2x - y = 1
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\end{cases}
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$$ |
