> 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/sv/latex-fel/02-command-r-invalid-in-math-mode-on-input-line-xxx.md).

# Kommandot \r är ogiltigt i matematikläge på inmatningsrad XXX

Detta fel visas när specialtecken används felaktigt i matematikläge. I LaTeX kan vissa tecken, såsom bokstäver med accent eller bokstäver med omljud, inte skrivas i matematikläge. Det bästa sättet att lösa detta är att skriva dem inne i **`\text{...}`** som tillhandahålls av **`amsmath`** paketet.

## Vanliga orsaker

**Att inkludera bokstäver med accenter, omljud osv. i matematikläge:**

t.ex. är ö egentligen {\\"o}

**Att använda specialsymboler i matematikläge:**

t.ex. är ångström \AA egentligen \r{A}


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