{"version":"1.0","height":"190","categories":["\u7dda\u5f62\u4ee3\u6570","\u9ad8\u6821\u6570\u5b66"],"type":"rich","description":"\u306f\u3058\u3081\u306b \u3042\u308b\u3075\u305f\u3064\u306e\u30d9\u30af\u30c8\u30eb $\\U$ \u3068 $\\V$ \u306e\u5185\u7a4d $\\U \\cdot \\V$ \u306b\u3064\u3044\u3066\u8003\u3048\u308b*1\u3002\u9ad8\u6821\u306e\u77e5\u8b58\u3067\u3001\\[ \\begin{align} \\U \\cdot \\V &= \\abs{\\U} \\abs{\\V} \\cos \\theta \\\\ \\U \\cdot \\V &= U_1 V_1 + U_2 V_2 + \\dots = \\sum_i U_i V_i \\end{align} \\]\u3068\u30012\u901a\u308a\u306e\u8868\u73fe\u304c\u601d\u3044\u6d6e\u304b\u3076\u3060\u308d\u3046\u3002\u3053\u3053\u3067\u3001 $\\theta$ \u306f\u3075\u305f\u3064\u306e\u30d9\u30af\u30c8\u30eb\u304c\u306a\u3059\u89d2\u3067\u3042\u308b\u3002\u307e\u305f\u3001$U_i$ \u306f $\\U$ \u306e $i$ \u756a\u76ee\u306e\u6210\u5206\u3060\u3002\u524d\u8005\u3092\u300c$\\cos$ \u306e\u5185\u7a4d\u300d\u3001\u5f8c\u8005\u3092\u300c\u6210\u5206\u2026","image_url":"https://www.dropbox.com/s/qptjcclt7zsna3b/vector_resolution.png?raw=1","blog_title":"Phys and Tips","provider_name":"Hatena Blog","url":"https://blog.physips.com/entry/inner_product","title":"cos \u3092\u4f7f\u3063\u305f\u5185\u7a4d\u3068\u6210\u5206\u3092\u4f7f\u3063\u305f\u5185\u7a4d\u306f\u540c\u3058\u304b\uff1f","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.physips.com%2Fentry%2Finner_product\" title=\"cos \u3092\u4f7f\u3063\u305f\u5185\u7a4d\u3068\u6210\u5206\u3092\u4f7f\u3063\u305f\u5185\u7a4d\u306f\u540c\u3058\u304b\uff1f - Phys and Tips\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2016-06-04 10:00:00","blog_url":"https://blog.physips.com/","author_name":"horiem","author_url":"https://blog.hatena.ne.jp/horiem/","width":"100%","provider_url":"https://hatena.blog"}