> For the complete documentation index, see [llms.txt](https://overleaf-pro.ayaka.space/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://overleaf-pro.ayaka.space/latex/ko/latex-1/02-command-r-invalid-in-math-mode-on-input-line-xxx.md).

# 입력 줄 XXX에서 명령 \r은 수학 모드에서 유효하지 않습니다

이 오류는 수학 모드에서 특수 문자가 잘못 사용될 때 나타납니다. LaTeX에서는 악센트가 있는 문자나 움라우트가 있는 문자와 같은 특정 문자를 수학 모드에서 쓸 수 없습니다. 이를 해결하는 가장 좋은 방법은 이러한 문자들을 다음 안에 작성하는 것입니다. **`\text{...}`** 에서 제공하는 **`amsmath`** 패키지.

## 일반적인 원인

**수학 모드에 악센트, 움라우트 등이 있는 문자를 포함하기:**

예: ö는 실제로 {\\"o}입니다

**수학 모드에서 특수 기호를 사용하기:**

예: 옹스트롬 \AA는 실제로 \r{A}입니다


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