{"id":437,"date":"2024-06-01T11:08:06","date_gmt":"2024-06-01T02:08:06","guid":{"rendered":"https:\/\/keiosg.com\/chuugakubu\/?p=437"},"modified":"2024-06-01T11:08:06","modified_gmt":"2024-06-01T02:08:06","slug":"%e5%bc%8f%e3%81%ae%e5%80%a4","status":"publish","type":"post","link":"https:\/\/keiosg.com\/chuugakubu\/archives\/437","title":{"rendered":"\u5f0f\u306e\u5024"},"content":{"rendered":"

\u5e73\u621021\u5e74\u3000\u6176\u61c9\u7fa9\u587e\u5fd7\u6728\u9ad8\u6821<\/p>\n

\"x=\frac{3+\sqrt{5}}{2}\"\u306e\u3068\u304d\u3001\u6b21\u306e\u5f0f\u306e\u5024\u3092\u6c42\u3081\u3088\u3002<\/p>\n

(1)\"x+\frac{1}{x}\"<\/p>\n

(2)\"x^2+\frac{1}{x^2}\"<\/p>\n

(3)\"x^3+\frac{1}{x^3}\"<\/p>\n

\u3010\u89e3\u8aac\u3068\u89e3\u7b54\u3011
\n(1)\u4e0e\u5f0f\uff1d
\n\"\frac{3+\sqrt{5}}{2}+\frac{2}{3+\sqrt{5}}\"
\n\"=\frac{3+\sqrt{5}}{2}+\frac{2(3-\sqrt{5})}{(3+\sqrt{5})(3-\sqrt{5})}\"
\n\"=\frac{3+\sqrt{5}}{2}+\frac{3-\sqrt{5}}{2}\"
\n\"=3\"
\n\uff08\u7b54\u3048\uff093<\/p>\n

(2)
\n\"(x+\frac{1}{x})^2=x^2+\frac{1}{x^2}+2\"
\n\u3088\u308a
\n\u4e0e\u5f0f\uff1d\"3^2-2=7\"
\n\uff08\u7b54\u3048\uff097<\/p>\n

(3)
\n\"(x+\frac{1}{x})^3=x^3+\frac{1}{x^3}+3(x+\frac{1}{x})\"
\n\u3088\u308a
\n\u4e0e\u5f0f\uff1d\"3^3-3\times3=18\"
\n\uff08\u7b54\u3048\uff0918<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5e73\u621021\u5e74\u3000\u6176\u61c9\u7fa9\u587e\u5fd7\u6728\u9ad8\u6821 \u306e\u3068\u304d\u3001\u6b21\u306e\u5f0f\u306e\u5024\u3092\u6c42\u3081\u3088\u3002 (1) (2) (3) \u3010\u89e3\u8aac\u3068\u89e3\u7b54\u3011 (1)\u4e0e\u5f0f\uff1d \uff08\u7b54\u3048\uff093 (2) \u3088\u308a \u4e0e\u5f0f\uff1d \uff08\u7b54\u3048\uff097 (3) \u3088\u308a \u4e0e\u5f0f\uff1d \uff08\u7b54\u3048\uff0918<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11,4],"tags":[],"class_list":["post-437","post","type-post","status-publish","format-standard","hentry","category-11","category-4"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/keiosg.com\/chuugakubu\/wp-json\/wp\/v2\/posts\/437","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/keiosg.com\/chuugakubu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/keiosg.com\/chuugakubu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/keiosg.com\/chuugakubu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/keiosg.com\/chuugakubu\/wp-json\/wp\/v2\/comments?post=437"}],"version-history":[{"count":12,"href":"https:\/\/keiosg.com\/chuugakubu\/wp-json\/wp\/v2\/posts\/437\/revisions"}],"predecessor-version":[{"id":462,"href":"https:\/\/keiosg.com\/chuugakubu\/wp-json\/wp\/v2\/posts\/437\/revisions\/462"}],"wp:attachment":[{"href":"https:\/\/keiosg.com\/chuugakubu\/wp-json\/wp\/v2\/media?parent=437"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/keiosg.com\/chuugakubu\/wp-json\/wp\/v2\/categories?post=437"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/keiosg.com\/chuugakubu\/wp-json\/wp\/v2\/tags?post=437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}