{
  "url": "https://unifast.dev/ja/docs/packages/node/math/",
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  "title": "math()",
  "description": "インラインおよびディスプレイ構文による数式表現を有効にします。",
  "section": "packages",
  "body": "```ts\n\n```\n\n## シグネチャ\n\n```ts\nfunction math(): UnifastPlugin\n```\n\n## パラメータ\n\nなし。\n\n## 使い方\n\n```ts\n\nconst md = `\nEinstein's famous equation: $E = mc^2$\n\nThe sum of integers from 1 to n:\n\n$$\n\\sum_{i=1}^{n} i = \\frac{n(n+1)}{2}\n$$\n`;\n\nconst result = compile(md, { plugins: [math()] });\n```\n\n## 使用例\n\n### 数式の表現\n\n### インライン数式\n\nインライン数式には単一の `$` を区切り文字として使います。\n\n```ts\n\nconst md = `\nThe quadratic formula is $x = \\\\frac{-b \\\\pm \\\\sqrt{b^2 - 4ac}}{2a}$ and is used to solve quadratic equations.\n`;\n\nconst result = compile(md, { plugins: [math()] });\n```\n\n### ディスプレイ数式\n\nディスプレイ数式には `$$` を区切り文字として使うか、言語に `math` を指定したコードブロックを使います。\n\n```ts\n\nconst md = `\n$$\n\\\\int_{0}^{\\\\infty} e^{-x^2} dx = \\\\frac{\\\\sqrt{\\\\pi}}{2}\n$$\n`;\n\nconst result = compile(md, { plugins: [math()] });\n```\n\n### KaTeX CSS の読み込み\n\nプラグインは数式構文を適切な HTML 構造に変換しますが、ブラウザで正しく描画するためには KaTeX CSS を別途読み込む必要があります。\n\n```html\n<link\n  rel=\"stylesheet\"\n  href=\"https://cdn.jsdelivr.net/npm/katex@0.16.11/dist/katex.min.css\"\n  crossorigin=\"anonymous\"\n/>\n```",
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