# 数式 & TeX

mathTeX形式を使用して、ドキュメントに数式を含めることができます。これを提供しているのは [KaTeX](https://katex.org/docs/supported.html) ライブラリです。

mathTeXも追加できます [インラインコンテンツとして](/docs/documentation/ja-gitbook-documentation/creating-content/formatting/inline.md#math-and-tex).

### Math & TeXブロックの例

$$
s = \sqrt{\frac{1}{N-1} \sum\_{i=1}^N (x\_i - \overline{x})^2}
$$

### Markdown での表現

$$f(x) = x \* e^{2 pi i \xi x}$$

```markdown
# 数式と TeX ブロック

$$f(x) = x * e^{2 pi i \xi x}$$
```


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