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src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2023\/02\/hew3.jpg\" alt=\"\" width=\"600\" height=\"264\" class=\"aligncenter size-full wp-image-12539\" \/><\/p>\n<p>\u3053\u306e\u3088\u3046\u306b\u56f3\u3092\u4f5c\u308a\u3001\u4e8c\u6b21\u95a2\u6570\u306e\u3068\u304d\u3068\u540c\u69d8\u306b\u8003\u3048\u308b\u3068\u3001\u306a\u305c\u5148\u307b\u3069\u8a18\u3057\u305f\u56f3\u304c\u6210\u308a\u7acb\u3064\u306e\u304b\u7406\u89e3\u3067\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070<span style=\"color: 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loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2023\/02\/feh1.jpg\" alt=\"\" width=\"505\" height=\"296\" class=\"aligncenter size-full wp-image-12569\" \/><\/p>\n<p>\\(y=2x+k\\)\u306b\u3064\u3044\u3066\u3001\u4ee5\u4e0b\u306e\u5834\u5408\u3067\u306f\u5207\u7247\\(k\\)\u304c\u6700\u5927\u307e\u305f\u306f\u6700\u5c0f\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/hatsudy.com\/jp\/wp-content\/uploads\/2023\/02\/hew8.jpg\" alt=\"\" width=\"461\" height=\"303\" class=\"aligncenter size-full wp-image-12544\" \/><\/p>\n<p>\\(y=2x+k\\)\u304c\u4e0a\u56f3\u306e\u5de6\u5074\u306b\u3066\u6955\u5186\u3068\u76f4\u7dda\u306e\u4ea4\u70b9\u3092\u901a\u308b\u5834\u5408\u3001\u5207\u7247\\(k\\)\u306f\u6700\u5927\u306b\u306a\u308a\u307e\u3059\u3002\u4e00\u65b9\u3001\\(y=2x+k\\)\u304c\u6955\u5186\u306e\u53f3\u5074\u3067\u63a5\u3059\u308b\u5834\u5408\u3001\u5207\u7247\\(k\\)\u306f\u6700\u5c0f\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u3053\u3067\u3001\u305d\u308c\u305e\u308c\u306b\u3064\u3044\u3066\u8a08\u7b97\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><strong>\u30fb\u6700\u5927\u5024\u3092\u6c42\u3081\u308b<\/strong><\/p>\n<p>\\(\\displaystyle\\frac{x^2}{4}+y^2=1\\)\u306f\\(x^2+4y^2=4\\)\u3067\u3059\u3002\u305d\u3053\u3067\u3001\\(y=x+1\\)\u3092\\(x^2+4y^2=4\\)\u3078\u4ee3\u5165\u3059\u308b\u3053\u3068\u3067\u4ea4\u70b9\u3092\u8a08\u7b97\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\\(x^2+4y^2=4\\)<\/p>\n<p>\\(x^2+4(x+1)^2=4\\)<\/p>\n<p>\\(5x^2+8x=0\\)<\/p>\n<p>\\(x(5x+8)=0\\)<\/p>\n<p>\u3053\u3046\u3057\u3066\\(x=0,-\\displaystyle\\frac{8}{5}\\)\u304c\u7b54\u3048\u3067\u3059\u3002\u306a\u304a\u56f3\u3088\u308a\u3001\\(x=-\\displaystyle\\frac{8}{5}\\)\u306e\u3068\u304d\u306b\\(k\\)\u304c\u6700\u5927\u306b\u306a\u308b\u3068\u308f\u304b\u308a\u307e\u3059\u3002\\(x=-\\displaystyle\\frac{8}{5}\\)\u306e\u3068\u304d\u3001\\(y=-\\displaystyle\\frac{3}{5}\\)\u3067\u3059\u3002\u305d\u3053\u3067\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u6700\u5927\u5024\u3092\u8a08\u7b97\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\\(y-2x=k\\)<\/p>\n<p>\\(-\\displaystyle\\frac{3}{5}+2\u00d7\\displaystyle\\frac{8}{5}=k\\)<\/p>\n<p>\\(k=\\displaystyle\\frac{13}{5}\\)<\/p>\n<p>\u3053\u3046\u3057\u3066\u3001\u6700\u5927\u5024\u306f\\(k=\\displaystyle\\frac{13}{5}\\)\u3068\u308f\u304b\u308a\u307e\u3057\u305f\u3002<\/p>\n<p><strong>\u30fb\u6700\u5c0f\u5024\u3092\u6c42\u3081\u308b<\/strong><\/p>\n<p>\u6b21\u306b\u6700\u5c0f\u5024\u3092\u8a08\u7b97\u3057\u307e\u3057\u3087\u3046\u3002\u6955\u5186\u3068\\(y=2x+k\\)\u304c\u63a5\u3059\u308b\u305f\u3081\u3001\\(y=2x+k\\)\u3092\\(x^2+4y^2=4\\)\u3078\u4ee3\u5165\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\\(x^2+4y^2=4\\)<\/p>\n<p>\\(x^2+4(2x+k)^2=4\\)<\/p>\n<p>\\(17x^2+16kx+4k^2-4=0\\)<\/p>\n<p>\\(k\\)\u306e\u5024\u304c\u6700\u5c0f\u306b\u306a\u308b\u3068\u304d\u3001\u76f4\u7dda\u3068\u6955\u5186\u306f\u63a5\u3057\u307e\u3059\u3002\u3064\u307e\u308a\u5224\u5225\u5f0f\\(D\\)\u306e\u5024\u304c0\u306b\u306a\u308b\u305f\u3081\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a08\u7b97\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\\(\\displaystyle\\frac{D}{4}=64k^2-17(4k^2-4)=0\\)<\/p>\n<p>\\(-4k^2+68=0\\)<\/p>\n<p>\\(k^2=17\\)<\/p>\n<p>\\(k=\u00b1\\sqrt{17}\\)<\/p>\n<p>\u3064\u307e\u308a\u3001\\(k=\\sqrt{17}\\)\u307e\u305f\u306f\\(k=-\\sqrt{17}\\)\u306e\u3068\u304d\u306b\u76f4\u7dda\u3068\u6955\u5186\u304c\u63a5\u3057\u307e\u3059\u3002\u306a\u304a\\(k=\\sqrt{17}\\)\u3068\\(k=-\\sqrt{17}\\)\u3067\u306f\u3001\u5024\u306f\\(k=-\\sqrt{17}\\)\u3067\u5c0f\u3055\u304f\u3001\\(k=-\\sqrt{17}\\)\u304c\u6700\u5c0f\u5024\u306b\u306a\u308b\u3068\u308f\u304b\u308a\u307e\u3059\u3002\u3053\u3046\u3057\u3066\u3001\u6700\u5927\u5024\u3060\u3051\u3067\u306a\u304f\u6700\u5c0f\u5024\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<h2>\u4e8c\u6b21\u66f2\u7dda\u3067\u9818\u57df\u3092\u7b54\u3048\u3089\u308c\u308b\u3088\u3046\u306b\u3059\u308b<\/h2>\n<p>\u4e8c\u6b21\u95a2\u6570\u3084\u5186\u3092\u5229\u7528\u3057\u3066\u9818\u57df\u306e\u8a08\u7b97\u304c\u3067\u304d\u308b\u5834\u5408\u3001\u653e\u7269\u7dda\u3084\u6955\u5186\u3001\u53cc\u66f2\u7dda\u306b\u3064\u3044\u3066\u3082\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002\u89e3\u304d\u65b9\u306f\u540c\u3058\u3067\u3042\u308b\u305f\u3081\u3001\u8a08\u7b97\u306f\u96e3\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u305f\u3060\u8a08\u7b97\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u4e0d\u7b49\u5f0f\u3092\u7528\u3044\u3066\u4e8c\u6b21\u66f2\u7dda\u3092\u8868\u3059\u3068\u304d\u3001\u3069\u306e\u9818\u57df\u304c\u8a72\u5f53\u3059\u308b\u306e\u304b\u7406\u89e3\u3057\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u653e\u7269\u7dda\u3001\u6955\u5186\u3001\u53cc\u66f2\u7dda\u306b\u3064\u3044\u3066\u3001\u4e0d\u7b49\u5f0f\u304c\u8868\u3059\u9818\u57df\u3092\u4e8b\u524d\u306b\u5b66\u3093\u3067\u3044\u306a\u3044\u3068\u3001\u3069\u306e\u9818\u57df\u3092\u6307\u3057\u3066\u3044\u308b\u306e\u304b\u308f\u304b\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u305d\u3053\u3067\u4e8c\u6b21\u66f2\u7dda\u3068\u4e0d\u7b49\u5f0f\u306e\u95a2\u4fc2\u3092\u5b66\u3073\u307e\u3057\u3087\u3046\u3002\u305d\u3046\u3059\u308c\u3070\u3001\u6700\u5927\u3068\u6700\u5c0f\u3092\u5f97\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u56f3\u5f62\u306e\u554f\u984c\u3067\u57fa\u672c\u7684\u306a\u5185\u5bb9\u304c\u4e0d\u7b49\u5f0f\u3067\u3059\u3002\u653e\u7269\u7dda\u3084\u6955\u5186\u3001\u53cc\u66f2\u7dda\u306b\u3064\u3044\u3066\u3082\u3001\u4e0d\u7b49\u5f0f\u3092\u7528\u3044\u308b\u3068\u304d\u306b\u9818\u57df\u3092\u8a8d\u8b58\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e8c\u6b21\u66f2\u7dda\uff08\u653e\u7269\u7dda\u3001\u6955\u5186\u3001\u53cc\u66f2\u7dda\uff09\u3092\u5229\u7528\u3057\u3066\u56f3\u3092\u63cf\u304f\u3068\u304d\u3001\u4e0d\u7b49\u53f7\u3092\u7528\u3044\u308b\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u3001\u4e0d\u7b49\u53f7\u306e\u5411\u304d\u306b\u3088\u3063\u3066\u4e8c\u6b21\u66f2\u7dda\u3067\u8868\u3055\u308c\u308b\u9818\u57df\u304c\u7570\u306a\u308a\u307e\u3059\u3002 \u305f\u3060\u4e8c\u6b21\u95a2\u6570\u306b\u6bd4\u3079\u3066\u3001\u4e8c\u6b21\u66f2\u7dda\u306e\u4e0d\u7b49\u53f7\u304c\u8868\u3059\u9818\u57df\u3092\u7406\u89e3\u3059\u308b\u306e\u306f\u96e3 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":12547,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[],"class_list":{"0":"post-12529","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-h-math"},"_links":{"self":[{"href":"https:\/\/hatsudy.com\/jp\/wp-json\/wp\/v2\/posts\/12529","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hatsudy.com\/jp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hatsudy.com\/jp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hatsudy.com\/jp\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hatsudy.com\/jp\/wp-json\/wp\/v2\/comments?post=12529"}],"version-history":[{"count":9,"href":"https:\/\/hatsudy.com\/jp\/wp-json\/wp\/v2\/posts\/12529\/revisions"}],"predecessor-version":[{"id":12612,"href":"https:\/\/hatsudy.com\/jp\/wp-json\/wp\/v2\/posts\/12529\/revisions\/12612"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hatsudy.com\/jp\/wp-json\/wp\/v2\/media\/12547"}],"wp:attachment":[{"href":"https:\/\/hatsudy.com\/jp\/wp-json\/wp\/v2\/media?parent=12529"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hatsudy.com\/jp\/wp-json\/wp\/v2\/categories?post=12529"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hatsudy.com\/jp\/wp-json\/wp\/v2\/tags?post=12529"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}