{"type":"rich","url":"https://a4.hateblo.jp/entry/2018/10/28/175901","image_url":"https://chart.apis.google.com/chart?cht=tx&chl=%20a_n","published":"2018-10-28 17:59:01","width":"100%","height":"190","version":"1.0","author_url":"https://blog.hatena.ne.jp/dai-ig/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fa4.hateblo.jp%2Fentry%2F2018%2F10%2F28%2F175901\" title=\"\u7b49\u5dee\u6570\u5217\u306e\u548c - A4\u306e\u5b87\u5b99\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["\u6570\u5b66","\u6570\u5217"],"blog_url":"https://a4.hateblo.jp/","provider_name":"Hatena Blog","author_name":"dai-ig","provider_url":"https://hatena.blog","title":"\u7b49\u5dee\u6570\u5217\u306e\u548c","description":"\u7b49\u5dee\u6570\u5217 \u7b49\u5dee\u6570\u5217\u306e\u4e00\u822c\u9805\u306f\u3001\u3092\u521d\u9805\u3001\u3092\u516c\u5dee\u3068\u3057\u3066\u3001\\begin{equation}a_n=a_0+nd\\end{equation} \u306e\u5f62\u3067\u8868\u305b\u308b\u3002 (\u4e0e\u3048\u3089\u308c\u305f\u521d\u9805\u304c\u3060\u3063\u305f\u3089\u3092\u5f15\u3044\u3066\u3092\u4f5c\u3063\u3066\u304a\u3053\u3046\u3002\u304c\u521d\u9805\u3060\u3068\u306e\u4fc2\u6570\u304c\u306b\u306a\u3063\u3066\u9762\u5012\u306a\u306e\u3067) \u7b49\u5dee\u6570\u5217\u306e\u548c \u3053\u306e\u6570\u5217\u3092\u304b\u3089\u307e\u3067\u8db3\u3057\u305f\u5024\u306f\u3044\u304f\u3064\u306b\u306a\u308b\u304b\uff1f\u3084\u7701\u7565\u306e\u306a\u3044\u5f62\u3067\u8868\u3057\u305f\u3044\u3002 \u307e\u305a\u5358\u7d14\u306b\u548c\u3092\u53d6\u3063\u3066\u307f\u308b\u3068\u3001 \\begin{equation}\\displaystyle \\sum_{k=m}^n(a_0+kd)=a_0+md+\\left\\{a_0+(m+1)d \\right\\} + \\left\\{a_0+(m+2)d \\right\\} + \\cdots\u2026","blog_title":"A4\u306e\u5b87\u5b99"}