\u3000\u4eba\u3092\u6df1\u304f\u50b7\u3064\u3051\u308b\u3053\u3068\u306e\u4e00\u3064\u306f\u300c\u5dee\u5225\u300d\u3067\u3042\u308d\u3046\u3002
\n\u3000\u3053\u306e\u300c\u5dee\u5225\u300d\u3067\u3042\u308b\u304c, \u4e00\u822c\u306b\u306f\u300c\u5dee\u5225\u306f\u3088\u304f\u306a\u3044\u3053\u3068\u300d\u3068\u8a00\u3046\u3082\u306e\u306e\u305d\u306e\u300c\u5dee\u5225\u300d\u306e\u5185\u5bb9\u306f\u3044\u304f\u3064\u3082\u306e\u7a2e\u985e\u304c\u3042\u308b\u3002\u3061\u306a\u307f\u306b, \u3053\u3053\u3067\u306f\u300c\u5dee\u5225\u300d\u306e\u9053\u5fb3\u7684\u306a\u8a71\u3092\u3057\u3088\u3046\u3068\u306f\u601d\u3063\u3066\u3044\u306a\u3044\u3002<\/p>\n
\u3000\u6559\u80b2\u306e\u5834\u3067\u8d77\u308a\u5f97\u308b\u300c\u5dee\u5225\u300d\u306f\u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3042\u308d\u3046\u3002
\n\u3000\u3042\u308b\u554f\u984c\u3092\u51fa\u3057\u305f\u3068\u304d\u306b\u305d\u308c\u3092\u7b54\u3048\u308b 2 \u4eba\u306e\u751f\u5f92\u304c\u3044\u305f\u3002\u305d\u306e 2 \u4eba\u306f\u307b\u307c\u540c\u3058\u89e3\u7b54\u3092\u7528\u610f\u3057\u3066\u304d\u305f\u3002\u3053\u3053\u3067, \u5148\u751f\u306f\u4e00\u4eba\u306b\u306f\u300c\u3088\u304f\u3053\u3093\u306a\u306e\u601d\u3044\u3064\u3044\u305f\u306d\u300d\u3068\u8a00\u3044, \u3082\u3046\u4e00\u4eba\u306b\u306f\u300c\u3053\u3093\u306a\u65b9\u6cd5\u3057\u304b\u601d\u3044\u3064\u304b\u306a\u304b\u3063\u305f\u306e\u300d\u306e\u3088\u3046\u306b\u7570\u306a\u308b\u8a55\u4fa1\u3092\u304f\u3060\u3057\u305f\u3002\u305d\u3057\u3066, \u3057\u304b\u3082\u3053\u306e 2 \u4eba\u304c\u304a\u4e92\u3044\u306b\u3069\u306e\u3088\u3046\u306a\u8a55\u4fa1\u3092\u3055\u308c\u305f\u304b\u3092\u77e5\u3063\u3066\u3057\u307e\u3063\u305f\u3002\u3053\u306e\u3088\u3046\u306a\u5834\u5408\u3067\u3042\u308b\u3002\u3082\u3061\u308d\u3093, 2 \u4eba\u306e\u305d\u306e\u6642\u70b9\u3067\u306e\u5b66\u7fd2\u5230\u9054\u5ea6\u306b\u3088\u3063\u3066, \u540c\u3058\u89e3\u7b54\u3092\u66f8\u3044\u3066\u3082\u8a89\u3081\u65b9\u306f\u7570\u306a\u308b\u3053\u3068\u306f\u3042\u308b\u3060\u308d\u3046\u3002\u3057\u304b\u3057, \u305d\u308c\u3092\u751f\u5f92\u304c\u7406\u89e3\u3067\u304d\u308b\u304b\u3069\u3046\u304b\u306f\u308f\u304b\u3089\u306a\u3044\u306e\u3067\u5341\u5206\u6ce8\u610f\u3092\u8981\u3059\u308b\u3053\u3068\u3067\u3042\u308b\u3002
\n\u3000\u3053\u306e\u3088\u3046\u306a\u3053\u3068\u306f\u4f55\u3082\u5148\u751f\u3068\u751f\u5f92\u306e\u95a2\u4fc2\u3060\u3051\u3067\u306f\u306a\u3044\u3002\u4e0a\u53f8\u304c\u540c\u3058\u4ed5\u4e8b\u3092\u540c\u3058\u3088\u3046\u306b\u3053\u306a\u3057\u305f 2 \u4eba\u306e\u90e8\u4e0b\u304c\u3044\u305f\u3068\u304d\u306b, \u4e00\u65b9\u306f\u8a55\u4fa1\u3057, \u4e00\u65b9\u8a55\u4fa1\u3057\u306a\u3044\u5834\u5408\u306a\u3069\u3082\u305d\u3046\u3067\u3042\u308b\u3002\u4f8b\u3048\u3070, \u3042\u308b\u4e0a\u53f8\u306e\u304a\u6c17\u306b\u5165\u308a\u306e P \u3055\u3093\u3068, \u3053\u306e\u4e0a\u53f8\u304c\u300c\u3053\u3044\u3064\u306f\u4ed5\u4e8b\u306f\u3067\u304d\u306a\u3044\u3068\u6c7a\u3081\u3064\u3051\u3066\u3044\u308b Q \u3055\u3093\u300d\u306b\u5bfe\u3057\u3066, (\u540c\u3058\u7d50\u679c\u3092\u6b8b\u3057\u305f\u306b\u3082\u95a2\u308f\u3089\u305a)
\n\u300c\u3055\u3059\u304c P \u3055\u3093\u3060\u306d\u3002\u591a\u5c11\u6b20\u9665\u306f\u3042\u308b\u3051\u3069\u3053\u3093\u306a\u306e\u306f\u305f\u3044\u3057\u305f\u3053\u3068\u306a\u3044\u3088\u3002\u305d\u308c\u3088\u308a\u3082\u3088\u304f\u3053\u3093\u306a\u3053\u3068\u3092\u8003\u3048\u305f\u306d\u3002\u300d
\n\u300cQ \u3055\u3093, \u3053\u308c\u6b20\u9665\u3060\u3089\u3051\u3058\u3083\u306a\u3044\u304b\u3002\u6b20\u9665\u304c\u3042\u308b\u3063\u3066\u6c17\u304c\u3064\u304b\u306a\u304b\u3063\u305f\u306e?\u300d
\n\u3068\u8a00\u3063\u3066\u3057\u307e\u3046\u306a\u3069\u3002
\n\u3000\u3053\u308c\u306f, Q \u3055\u3093\u3092\u50b7\u3064\u3051, Q \u3055\u3093\u306e\u3084\u308b\u6c17\u3092\u596a\u3063\u3066\u3057\u307e\u3046\u3002
\n \u3000
\n\u3000\u79c1\u306f, \u6559\u80b2\u8005\u3068\u304b\u7d44\u7e54\u306e\u4e2d\u3067\u4eba\u306e\u4e0a\u306b\u7acb\u3064\u4eba\u306b\u306f, \u4eba\u3092\u81ea\u5206\u306e\u504f\u3063\u305f\u30d5\u30a3\u30eb\u30bf\u30fc\u3092\u901a\u3055\u305a\u306b\u898b\u308b\u300c\u76ee\u300d\u304c\u5927\u5909\u91cd\u8981\u3067\u3042\u308b\u3068\u8003\u3048\u308b\u3002\u305d\u308c\u304c\u4e0a\u306e\u3088\u3046\u306a\u300c\u5dee\u5225\u300d\u3092\u306a\u304f\u3059\u305f\u3081\u306b\u5fc5\u8981\u306a\u3082\u306e\u3067\u3042\u308b\u3002<\/p>\n
\u3000\u79c1\u306f, \u81ea\u5206\u306e\u8457\u66f8\u300c\u6570\u5b66\u306e\u5e78\u305b\u7269\u8a9e\u300d\u306e\u4e2d\u3067, \u3042\u308b\u751f\u5f92\u306e\u53f0\u8a5e\u3068\u3057\u3066\u6b21\u306e\u3088\u3046\u306b\u8a00\u308f\u305b\u3066\u3042\u308b\u3002
\n\u300c\u3088\u3044\u533b\u8005\u306e\u6761\u4ef6\u306e\u4e00\u3064\u3068\u3057\u3066, \u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308b\u3002
\n\u4eca, 100 \u4eba\u306e\u4f3c\u305f\u3088\u3046\u306a\u75c7\u72b6\u3092\u3082\u3064\u60a3\u8005\u304c\u3044\u305f\u3068\u3057\u3088\u3046\u3002\u6700\u521d\u306e 99 \u4eba\u306f\u8efd\u3044\u8179\u75db\u306e\u75c7\u72b6\u3067\u3042\u3063\u305f\u306e\u3067, \u85ac\u3092 1 \u3064 2 \u3064\u51fa\u3057\u3066\u5e30\u3063\u3066\u3082\u3089\u3063\u3066\u3082\u3088\u304b\u3063\u305f\u3002\u3068\u3053\u308d\u304c, 100 \u4eba\u76ee\u306f\u540c\u3058\u3088\u3046\u306a\u75c7\u72b6\u3067\u3042\u3063\u3066\u3082\u5b9f\u306f\u5927\u5909\u91cd\u3044\u75c5\u6c17\u306b\u304b\u304b\u3063\u3066\u3044\u305f\u3002
\n\u3000\u305d\u3093\u306a\u72b6\u6cc1\u306e\u3082\u3068\u3067, 100 \u4eba\u76ee\u306e\u60a3\u8005\u3082\u540c\u3058\u3088\u3046\u306a\u75c7\u72b6\u3060\u304b\u3089\u5927\u4e08\u592b\u3068\u81ea\u5206\u306e\u601d\u3044\u8fbc\u307f\u3067\u304d\u3061\u3093\u3068\u8abf\u3079\u306a\u3044\u3067\u5224\u65ad\u3057\u3066\u3057\u307e\u3046\u306e\u306f, \u307e\u3060\u307e\u3060\u4fee\u884c\u306e\u8db3\u308a\u306a\u3044\u533b\u8005\u3067\u3042\u308b\u3002\u3053\u308c\u306b\u5bfe\u3057, 100 \u4eba\u76ee\u306e\u60a3\u8005\u3082\u3057\u3063\u304b\u308a\u3068\u8a3a\u5bdf\u3067\u304d\u308b\u533b\u8005\u306f\u4fe1\u983c\u3057\u3066\u3088\u3044\u3002\u300d<\/p>\n
\u3000\u6559\u80b2\u8005\u306e\u7acb\u5834\u306b\u7f6e\u304d\u63db\u3048\u3066\u8a00\u3046\u3068\u3053\u3093\u306a\u611f\u3058\u3060\u308d\u3046\u3002\u3042\u308b\u554f\u984c\u3092\u51fa\u3057, \u305d\u306e\u5f8c\u3067 100 \u4eba\u306e\u4eba\u304c\u8cea\u554f\u306b\u6765\u305f\u3002\u8cea\u554f\u8005\u306e 99 \u4eba\u307e\u3067\u306f\u81ea\u5206\u306e\u4e88\u60f3\u3057\u3066\u3044\u305f\u3082\u306e\u3067, \u672c\u4eba\u306e\u4e0d\u6ce8\u610f\u306a\u3069\u306b\u3088\u308b\u3082\u306e\u3067\u3042\u3063\u305f\u3002\u3068\u3053\u308d\u304c 100 \u4eba\u76ee\u306f\u8cea\u554f\u306e\u5185\u5bb9\u306f\u4f3c\u3066\u3044\u3066\u3082, \u5b9f\u306f\u554f\u984c\u306e\u65b9\u306e\u30df\u30b9\u3060\u3063\u305f\u3068\u3059\u308b\u3002\u3053\u3093\u306a\u3068\u304d\u306b, \u300c\u3069\u3046\u305b\u540c\u3058\u8cea\u554f\u3060\u308d\u3046\u300d\u3068\u6c7a\u3081\u3064\u3051\u3066\u8ffd\u3044\u8fd4\u3059\u3088\u3046\u306b\u5bfe\u5fdc\u3057\u3066\u3057\u307e\u3046\u306e\u306f, \u307e\u3060\u307e\u3060\u4fee\u884c\u304c\u8db3\u308a\u306a\u3044\u6559\u80b2\u8005\u3067\u3042\u308b\u300299 \u56de\u540c\u3058\u8a71\u304c\u3042\u3063\u305f\u3042\u3068\u3067\u3082 100 \u56de\u76ee\u3092\u3057\u3063\u304b\u308a\u898b\u6975\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u4eba\u306f\u3053\u306e\u4ef6\u306b\u3064\u3044\u3066\u306f\u3057\u3063\u304b\u308a\u3068\u3057\u305f\u6559\u80b2\u8005\u3067\u3042\u308b\u3002
\n\u3000\u6700\u521d\u306b\u3042\u3052\u305f\u300c\u533a\u5225\u300d\u3068\u306f\u5c11\u3057\u7570\u306a\u308b\u3082\u306e\u3067\u3042\u308b\u304c, \u6700\u521d\u306e\u300c\u6c7a\u3081\u3064\u3051\u3089\u308c\u3066\u8ffd\u3044\u8fd4\u3055\u308c\u305f\u5bfe\u5fdc\u300d\u3092\u53d7\u3051\u305f\u306e\u3067\u306f, \u751f\u5f92\u306b\u3088\u304f\u306a\u3044\u5f71\u97ff\u3092\u4e0e\u3048\u3066\u3057\u307e\u3046\u3053\u3068\u306b\u306a\u308a\u304b\u306d\u306a\u3044\u3002
\n\u3000\u3053\u306e\u3088\u3046\u306a\u5bfe\u5fdc\u306f, \u610f\u5916\u3068\u5dee\u5225\u3057\u305f\u5074\u306f\u6c17\u304c\u3064\u304b\u306a\u3044\u306e\u3067, \u81ea\u5206\u81ea\u8eab\u3082\u6ce8\u610f\u3057\u3088\u3046\u3068\u306f\u5e38\u3005\u601d\u3063\u3066\u3044\u308b\u3002<\/p>\n
\u3000\u3068\u3053\u308d\u3067, \u8a71\u306f\u5c11\u3057\u305a\u308c\u308b\u304c, \u6570\u5b66\u306e\u4e2d\u3067\u300c\u5dee\u5225\u300d\u304c\u8a9e\u6e90\u3067\u3042\u308b\u7528\u8a9e\u304c\u3042\u308b\u3002\u305d\u308c\u306f\u4f55\u3060\u304b\u3054\u5b58\u3058\u3067\u3042\u308d\u3046\u304b\u3002\u305d\u308c\u306f, discriminant \u3067\u3042\u308b\u3002(\u300c\u5dee\u5225\u3059\u308b\u300d\u306f discriminate, \u300c\u5dee\u5225\u300d\u306f discrimination ) \u6559\u79d1\u66f8\u3067\u306f\u300c\u5224\u5225\u5f0f\u300d\u3068\u3042\u308b\u3002\u307e\u3042\u3053\u306e\u8a9e\u81ea\u4f53\u306f \u300c\u5dee\u5225\u300d\u3068\u307e\u3067\u8a00\u308f\u306a\u3044\u307e\u3067\u3082\u300c\u533a\u5225\u300d\u3068\u3044\u3046\u610f\u5473\u304b\u3089\u4f5c\u3089\u308c\u305f\u8a9e\u306a\u306e\u304b\u3082\u3057\u308c\u306a\u3044\u3002\u305d\u306e\u8fba\u306f\u79c1\u306f\u65ad\u8a00\u3059\u308b\u77e5\u8b58\u3092\u3082\u305f\u306a\u3044\u304c, \u3042\u308b\u6709\u540d\u306a\u6570\u5b66\u306e\u5148\u751f\u304c\u300cdiscriminant? \u3042, \u300e\u5dee\u5225\u5f0f\u300f\u306e\u3053\u3068\u306d\u300d\u3068\u8a00\u3063\u3066\u3044\u305f\u306e\u3092\u601d\u3044\u51fa\u3059\u3002\u82f1\u8a9e\u3092\u65e5\u672c\u8a9e\u306b\u3042\u3066\u308b\u3068\u304d\u306b, \u5999\u306a\u65e5\u672c\u8a9e\u3092\u3042\u3066\u3066\u305d\u308c\u304c\u5b9a\u7740\u3059\u308b\u3053\u3068\u304c\u3042\u3063\u305f\u308a, \u307e\u305f, operator \u306e\u3088\u3046\u306b\u7acb\u5834\u3067\u8907\u6570\u306e\u8a33\u8a9e\u3092\u3042\u3066\u308b(\u6570\u5b66\u3067\u306f\u300c\u4f5c\u7528\u7d20\u300d, \u7269\u7406\u3067\u306f\u300c\u6f14\u7b97\u5b50\u300d)\u5834\u5408\u3082\u3042\u308b\u304c, \u3053\u306e discriminant \u306b\u306f\u300c\u5dee\u5225\u5f0f\u300d\u3067\u306f\u306a\u304f, \u3046\u307e\u304f\u300c\u5224\u5225\u5f0f\u300d\u3068\u3044\u3046\u7528\u8a9e\u3092\u3042\u3066\u305f\u3082\u306e\u3060\u3068\u601d\u3048\u3066\u304d\u305f\u3002\u4e00\u3064\u9593\u9055\u3048\u3070\u300c\u5dee\u5225\u5f0f\u300d\u306b\u306a\u3063\u3066\u3044\u305f\u306e\u304b\u3082\u3057\u308c\u306a\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u3000\u4eba\u3092\u6df1\u304f\u50b7\u3064\u3051\u308b\u3053\u3068\u306e\u4e00\u3064\u306f\u300c\u5dee\u5225\u300d\u3067\u3042\u308d\u3046\u3002 \u3000\u3053\u306e\u300c\u5dee\u5225\u300d\u3067\u3042\u308b\u304c, \u4e00\u822c\u306b\u306f\u300c\u5dee\u5225\u306f\u3088\u304f\u306a\u3044\u3053\u3068\u300d\u3068\u8a00\u3046\u3082\u306e\u306e\u305d\u306e\u300c\u5dee\u5225\u300d\u306e\u5185\u5bb9\u306f\u3044\u304f\u3064\u3082\u306e\u7a2e\u985e\u304c\u3042\u308b\u3002\u3061\u306a\u307f\u306b, \u3053\u3053\u3067\u306f\u300c\u5dee\u5225\u300d\u306e\u9053\u5fb3\u7684\u306a\u8a71\u3092\u3057\u3088\u3046\u3068\u306f\u601d\u3063\u3066\u3044 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,7,4],"tags":[],"class_list":["post-537","post","type-post","status-publish","format-standard","hentry","category-3","category-7","category-4"],"_links":{"self":[{"href":"https:\/\/math.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/537","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/math.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/math.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/math.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/math.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=537"}],"version-history":[{"count":2,"href":"https:\/\/math.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/537\/revisions"}],"predecessor-version":[{"id":627,"href":"https:\/\/math.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/537\/revisions\/627"}],"wp:attachment":[{"href":"https:\/\/math.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=537"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/math.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=537"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/math.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=537"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}