# LaTeX 空格 ``` \[space] ``` 換行 ``` \\ ``` 次方 : $a^{n+1}$ ``` a^{n+1} ``` 分數 : $\frac{3}{4}$ ``` \frac{3}{4} ``` 歐拉符號 : $\varphi$ ``` \varphi ```
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