{"id":1866,"date":"2018-12-07T09:19:07","date_gmt":"2018-12-07T00:19:07","guid":{"rendered":"http:\/\/math.co.jp\/blog\/?p=1866"},"modified":"2019-03-15T09:59:39","modified_gmt":"2019-03-15T00:59:39","slug":"%e5%8f%97%e9%a8%93%e7%94%9f%e3%81%b8%e3%81%ae%e6%8c%91%e6%88%a6%e7%8a%b6-1","status":"publish","type":"post","link":"https:\/\/math.co.jp\/blog\/?p=1866","title":{"rendered":"\u53d7\u9a13\u751f\u3078\u306e\u6311\u6226\u72b6 1"},"content":{"rendered":"<p><br \/>\n\u3000\u53d7\u9a13\u751f\u306e\u305f\u3081\u306b, \u57fa\u672c\u7684\u3057\u304b\u3057\u30d4\u30ea\u30c3\u3068\u8f9b\u307f\u306e\u3042\u308b\u554f\u984c\u3092\u7528\u610f\u3057\u307e\u3057\u305f\u3002\u307e\u305a\u306f, \u4ee5\u4e0b\u306e\u554f\u984c\u3092\u89e3\u3044\u3066, \u89e3\u7b54\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3044\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u30d5\u30a1\u30a4\u30eb\u304c\u958b\u3051\u308c\u3070\u3059\u3079\u3066\u6b63\u89e3\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n\u3000\u96e3\u6613\u5ea6\u306f\u6a19\u6e96\u30ec\u30d9\u30eb\u3067\u3059\u3002IV. \u306e\u307f\u6570\u5b66 III \u306e\u7bc4\u56f2\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3010<strong>\u554f\u984c<\/strong>\u3011<\/p>\n<ol type=\"I\">\n<li>\\(k\\) \u3092\u5b9f\u6570\u3068\u3059\u308b\u3002 \\(x\\) \u306e 2 \u6b21\u65b9\u7a0b\u5f0f<br \/>\n$$x^{2}-2(1+2i)x+k+4i=0$$<br \/>\n\u304c\u5b9f\u6570\u89e3\u3092\u3082\u3064\u3088\u3046\u306a \\(k\\) \u306e\u6761\u4ef6\u3092<br \/>\n$$k\\, \\fbox{A}\\, \\fbox{\u30a2} $$<br \/>\n\u3068\u8868\u3059\u3068\u304d, \\(\\fbox{A}\\), \\(\\fbox{\u30a2}\\) \u306b\u5165\u308b\u3082\u306e\u3092\u6b21\u304b\u3089\u9078\u3079\u3002<br \/>\n\\(\\fbox{A}\\) \u306e\u89e3\u7b54\u7fa4<br \/>\n\u3000\u3000\u2460 \\(=\\)\u3000\u3000\u3000\u2461 \\(&gt;\\)\u3000\u3000\u3000\u2462 \\(\\geqq\\)\u3000\u3000\u3000\u2463 \\(&lt;\\)\u3000\u3000\u3000\u2464 \\(\\leqq\\)<br \/>\n\\(\\fbox{\u30a2}\\) \u306e\u89e3\u7b54\u7fa4<br \/>\n\u3000\u3000\u2460 \\(-4\\)\u3000\u3000\u3000\u2461 \\(-3\\)\u3000\u3000\u3000\u2462 \\(-2\\)\u3000\u3000\u3000\u2463 \\(-1\\)\u3000\u3000\u3000\u2464 \\(0\\)\u3000\u3000\u3000\u2465 \\(1\\)\u3000\u3000\u3000\u2466 \\(2\\)\u3000\u3000\u3000\u2467 \\(3\\)<br \/>\n(\u4f8b) \u4f8b\u3048\u3070, \\(k=0\\) \u304c\u7b54\u306e\u5834\u5408\u306f \\(\\fbox{A}\\) \u306f \u2460, \\(\\fbox{\u30a2}\\) \u306f \u2464 \u3067\u3059\u3002\u307e\u305f, \\(k\\geqq -1\\) \u304c\u7b54\u306e\u5834\u5408\u306f, \\(\\fbox{A}\\) \u306f \u2462, \\(\\fbox{\u30a2}\\) \u306f \u2463 \u3067\u3059\u3002<\/li>\n<li>\u6b21\u306e\u548c\u3092\u6c42\u3081\u3088\u3002<br \/>\n$$\\sum_{k=1}^{5}\\{k! -(k-1)!\\}$$<\/li>\n<li>\\(xy\\) \u5e73\u9762\u4e0a\u306e 2 \u3064\u306e\u5186\n<p>\u3000\u3000\u3000\u3000\\(C_{1}:x^{2}+y^{2}=1\\)<br \/>\n\u3000\u3000\u3000\u3000\\(C_{2}:x^{2}+y^{2}-4x+2ay+a^{2}=0\\)<\/p>\n<p>\u304c 2 \u70b9\u3067\u4ea4\u308f\u308a, \u305d\u306e\u4ea4\u70b9\u3092\u901a\u308b\u76f4\u7dda\u306f\u70b9 \\((-1,-3)\\) \u3092\u901a\u308b\u3068\u3044\u3046\u3002\u3053\u306e\u3068\u304d, \u5b9f\u6570 \\(a\\) \u306e\u5024\u3042\u308b\u3044\u306f \\(a\\) \u304c\u6e80\u305f\u3059\u6761\u4ef6\u306f\u6b21\u306e\u3069\u308c\u306b\u306a\u308b\u304b\u3092\u7b54\u3048\u3088\u3002<br \/>\n(\u89e3\u7b54\u7fa4)<br \/>\n\u3000\u3000\u2460 \\(a=1\\)\u3000\u3000\u3000\u2461 \\(a=5\\)\u3000\u3000\u3000\u2462 \\(a=1\\), \\(5\\)\u3000\u3000\u3000\u2463 \\(1\\leqq a\\leqq 5\\)\u3000\u3000\u3000\u2464\\(1&lt; a &lt; 5\\)<\/li>\n<li>\\(0\\leqq x\\leqq \\pi\\) \u3067\u5b9a\u7fa9\u3055\u308c\u305f\u95a2\u6570 \\(f(x)=\\frac{1}{2}\\sin 2x- 3\\sin x-x+1\\) \u306e\u6700\u5927\u5024\u3092\u4e0e\u3048\u308b \\(x\\) \u306e\u5024\u306f\u6b21\u306e\u3069\u308c\u304b\u3002<br \/>\n(\u89e3\u7b54\u7fa4)<br \/>\n\u3000\u3000\u2460 \\(0\\)\u3000\u3000\u3000\u2461 \\(\\frac{\\pi}{6}\\)\u3000\u3000\u3000\u2462 \\(\\frac{\\pi}{3}\\)\u3000\u3000\u3000\u2463 \\(\\frac{\\pi}{2}\\)\u3000\u3000\u3000\u2464 \\(\\frac{2}{3}\\pi\\)\u3000\u3000\u3000\u2465 \\(\\frac{5}{6}\\pi\\)\u3000\u3000\u3000\u2466 \\(\\pi\\)<\/li>\n<\/ol>\n<p>\u25cf\u3000\u6b63\u89e3\u304c\u308f\u304b\u3063\u305f\u3089, <a href=\"http:\/\/math.co.jp\/uploads\/ans2018-12-1.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">\u3053\u3053<\/a>\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u304f\u3060\u3055\u3044\u3002pdf \u30d5\u30a1\u30a4\u30eb\u304c\u958b\u304d\u307e\u3059\u304c, \u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u8981\u6c42\u3055\u308c\u307e\u3059\u3002\u30d1\u30b9\u30ef\u30fc\u30c9\u306f I. \uff5e IV. \u306e\u7b54\u3067\u3059\u3002\u5165\u529b\u306e\u65b9\u6cd5\u306f\u4e0b\u306e\u4f8b\u3092\u53c2\u8003\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3059\u3079\u3066\u6b63\u89e3\u306e\u5834\u5408\u306e\u307f pdf \u30d5\u30a1\u30a4\u30eb\u304c\u958b\u304d\u307e\u3059\u3002<br \/>\n\u3000(\u5165\u529b\u4f8b)<br \/>\n\u3000\u3000\u3000\u3000I. A: \u2460, \u30a2: \u2461\u3000\u3000\u3000II. 123\u3000\u3000\u3000III. \u2462\u3000\u3000\u3000IV. \u2463<br \/>\n\u306e\u5834\u5408\u306f, \u30d1\u30b9\u30ef\u30fc\u30c9\u306b\u300c1212334\u300d\u3092\u5165\u308c\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3000\u53d7\u9a13\u751f\u306e\u305f\u3081\u306b, \u57fa\u672c\u7684\u3057\u304b\u3057\u30d4\u30ea\u30c3\u3068\u8f9b\u307f\u306e\u3042\u308b\u554f\u984c\u3092\u7528\u610f\u3057\u307e\u3057\u305f\u3002\u307e\u305a\u306f, \u4ee5\u4e0b\u306e\u554f\u984c\u3092\u89e3\u3044\u3066, \u89e3\u7b54\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3044\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u30d5\u30a1\u30a4\u30eb\u304c\u958b\u3051\u308c\u3070\u3059\u3079\u3066\u6b63\u89e3\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002 \u3000\u96e3\u6613\u5ea6\u306f\u6a19\u6e96\u30ec\u30d9\u30eb\u3067\u3059\u3002IV. [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"class_list":["post-1866","post","type-post","status-publish","format-standard","hentry","category-19"],"_links":{"self":[{"href":"https:\/\/math.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1866","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\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/math.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1866"}],"version-history":[{"count":37,"href":"https:\/\/math.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1866\/revisions"}],"predecessor-version":[{"id":1928,"href":"https:\/\/math.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1866\/revisions\/1928"}],"wp:attachment":[{"href":"https:\/\/math.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1866"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/math.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1866"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/math.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1866"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}