{"id":340,"date":"2025-03-27T21:51:51","date_gmt":"2025-03-27T13:51:51","guid":{"rendered":"https:\/\/tilearn.space\/?p=340"},"modified":"2025-03-27T22:21:17","modified_gmt":"2025-03-27T14:21:17","slug":"2024%e5%b1%8a%e5%ae%9d%e5%b1%b1%e5%8c%ba%e5%88%9d%e4%b8%89%e4%ba%8c%e6%a8%a1%e6%95%b0%e5%ad%a6%e8%af%95%e5%8d%b7%e7%b2%be%e8%ae%b2%ef%bc%88%e7%ac%ac21%e9%a2%98%ef%bc%89","status":"publish","type":"post","link":"https:\/\/tilearn.space\/?p=340","title":{"rendered":"2024\u5c4a\u5b9d\u5c71\u533a\u521d\u4e09\u4e8c\u6a21\u6570\u5b66\u8bd5\u5377\u7cbe\u8bb2\uff08\u7b2c21\u9898\uff09"},"content":{"rendered":"
\n

\u9898\u76ee\uff1a<\/strong><\/h3>\n

21. \u5982\u56fe\uff0c\u5728\u5e73\u9762\u76f4\u89d2\u5750\u6807\u7cfbxOy\u4e2d\uff0c\u76f4\u7ebf \\(y = x + 3\\) \u4e0ex\u8f74\u3001y\u8f74\u5206\u522b\u4ea4\u4e8e\u70b9A\u3001B\uff0c\u4e0e\u53cd\u6bd4\u4f8b\u51fd\u6570 \\(y = \\frac{k}{x}\\) \u7684\u56fe\u50cf\u4ea4\u4e8e\u70b9C(2, m).<\/p>\n

\"c6ec388cdd2bae77264f2c882fcec27e\"<\/p>\n

    \n
  1. \uff081\uff09\u6c42\u53cd\u6bd4\u4f8b\u51fd\u6570\u7684\u89e3\u6790\u5f0f;<\/li>\n
  2. \uff082\uff09\u8fc7\u70b9C\u4f5cx\u8f74\u7684\u5e73\u884c\u7ebfl\uff0c\u5982\u679c\u70b9D\u5728\u76f4\u7ebfl\u4e0a\uff0c\u4e14CD = 3\uff0c\u6c42\u25b3ABD\u7684\u9762\u79ef.<\/li>\n<\/ol>\n

    \u8be6\u7ec6\u89e3\u7b54\uff1a<\/strong><\/h3>\n

    \uff081\uff09\u89e3\uff1a\u5728 \\(y = x + 3\\) \u4e2d\uff0c\u5f53 \\(x = 2\\) \u65f6\uff0c\\(y = x + 3 = 2 + 3 = 5\\)\u3002<\/p>\n

    \u2234 C(2, 5)\u3002<\/p>\n

    \u628aC(2, 5)\u4ee3\u5165 \\(y = \\frac{k}{x}\\) \u4e2d\u5f97\uff0c\\(5 = \\frac{k}{2}\\)\u3002<\/p>\n

    \u2234 \\(k = 10\\)\u3002<\/p>\n

    \u2234 \u53cd\u6bd4\u4f8b\u51fd\u6570\u89e3\u6790\u5f0f\u4e3a \\(y = \\frac{10}{x}\\)\u3002<\/p>\n

    \"fa36e019a81f23beef85f65eb90a5a1d\"<\/p>\n

    \uff082\uff09\u89e3\uff1a\u2235 \u76f4\u7ebf \\(y = x + 3\\) \u4e0ex\u8f74\u3001y\u8f74\u5206\u522b\u4ea4\u4e8e\u70b9A\u3001B\u3002<\/p>\n

    \u2234 A(-3, 0)\uff0cB(0, 3)\u3002<\/p>\n

    \u2234 \\(S_{\\triangle ABD} = S_{\\triangle ACD} – S_{\\triangle BCD}\\)\u3002<\/p>\n

    \\(= \\frac{1}{2} \\times 3 \\times 5 – \\frac{1}{2} \\times 3 \\times (5 – 3)\\)<\/p>\n

    \\(= \\frac{9}{2}\\)<\/p>\n

    \u76f8\u5173\u77e5\u8bc6\u70b9\u590d\u4e60\uff1a<\/strong><\/h3>\n
      \n
    1. \u76f4\u7ebf\u65b9\u7a0b\u7684\u6c42\u89e3\u65b9\u6cd5\uff1a\u901a\u8fc7\u5df2\u77e5\u6761\u4ef6\u786e\u5b9a\u76f4\u7ebf\u4e0a\u7684\u4e24\u70b9\uff0c\u5229\u7528\u4e24\u70b9\u5f0f\u6216\u659c\u622a\u5f0f\u6c42\u89e3\u76f4\u7ebf\u65b9\u7a0b\u3002<\/li>\n
    2. \u53cd\u6bd4\u4f8b\u51fd\u6570\u7684\u6027\u8d28\uff1a\u53cd\u6bd4\u4f8b\u51fd\u6570 \\(y = \\frac{k}{x}\\) \u4e2d\uff0c\\(k\\) \u4e3a\u5e38\u6570\uff0c\u5f53 \\(x\\) \u589e\u5927\u65f6\uff0c\\(y\\) \u51cf\u5c0f\uff1b\u5f53 \\(x\\) \u51cf\u5c0f\u65f6\uff0c\\(y\\) \u589e\u5927\u3002<\/li>\n
    3. \u5e73\u884c\u7ebf\u7684\u6027\u8d28\uff1a\u5e73\u884c\u7ebf\u95f4\u7684\u8ddd\u79bb\u76f8\u7b49\u3002<\/li>\n
    4. \u4e09\u89d2\u5f62\u9762\u79ef\u7684\u8ba1\u7b97\u65b9\u6cd5\uff1a\u5229\u7528\u5e95\u548c\u9ad8\u7684\u4e58\u79ef\u7684\u4e00\u534a\u6765\u8ba1\u7b97\u3002<\/li>\n<\/ol>\n

      \u6613\u9519\u63d0\u793a\u548c\u62d3\u5c55\uff1a<\/strong><\/h3>\n
        \n
      1. \u5728\u6c42\u89e3\u53cd\u6bd4\u4f8b\u51fd\u6570\u89e3\u6790\u5f0f\u65f6\uff0c\u6ce8\u610f\u5c06\u5df2\u77e5\u70b9\u7684\u5750\u6807\u4ee3\u5165\u516c\u5f0f\u6c42\u89e3 \\(k\\) \u503c\u3002<\/li>\n
      2. \u5728\u8ba1\u7b97\u4e09\u89d2\u5f62\u9762\u79ef\u65f6\uff0c\u6ce8\u610f\u9009\u62e9\u5408\u9002\u7684\u5e95\u548c\u9ad8\u8fdb\u884c\u8ba1\u7b97\u3002<\/li>\n
      3. \u62d3\u5c55\uff1a\u53ef\u4ee5\u8fdb\u4e00\u6b65\u63a2\u8ba8\u76f4\u7ebf\u4e0e\u53cd\u6bd4\u4f8b\u51fd\u6570\u56fe\u50cf\u7684\u4ea4\u70b9\u4e2a\u6570\u95ee\u9898\u3002<\/li>\n<\/ol>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

        \u9898\u76ee\uff1a 21. \u5982\u56fe\uff0c\u5728\u5e73\u9762\u76f4\u89d2\u5750\u6807\u7cfbxOy\u4e2d\uff0c\u76f4\u7ebf \\(y = x + 3\\) \u4e0ex\u8f74\u3001y\u8f74\u5206\u522b\u4ea4\u4e8e\u70b9A\u3001B […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-340","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/tilearn.space\/index.php?rest_route=\/wp\/v2\/posts\/340","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tilearn.space\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tilearn.space\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tilearn.space\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tilearn.space\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=340"}],"version-history":[{"count":9,"href":"https:\/\/tilearn.space\/index.php?rest_route=\/wp\/v2\/posts\/340\/revisions"}],"predecessor-version":[{"id":351,"href":"https:\/\/tilearn.space\/index.php?rest_route=\/wp\/v2\/posts\/340\/revisions\/351"}],"wp:attachment":[{"href":"https:\/\/tilearn.space\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=340"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tilearn.space\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=340"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tilearn.space\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=340"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}