{"id":176679,"date":"2020-10-12T02:56:53","date_gmt":"2020-10-11T18:56:53","guid":{"rendered":"http:\/\/4563.org\/?p=176679"},"modified":"2020-10-12T02:56:53","modified_gmt":"2020-10-11T18:56:53","slug":"%e4%b8%89%e7%bb%b4%e7%a9%ba%e9%97%b4%e4%b8%ad%e4%b8%8d%e5%9c%a8%e5%90%8c%e4%b8%80%e5%b9%b3%e9%9d%a2%e7%9a%84%e4%b8%a4%e4%b8%aa%e5%90%91%e9%87%8f-a-%e3%80%81b-%e7%9b%b8%e5%8a%a0%e4%b9%8b%e5%90%8e","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=176679","title":{"rendered":"\u4e09\u7ef4\u7a7a\u95f4\u4e2d\u4e0d\u5728\u540c\u4e00\u5e73\u9762\u7684\u4e24\u4e2a\u5411\u91cf A \u3001B \u76f8\u52a0\u4e4b\u540e\u7684\u5411\u91cf\u5fc5\u5b9a\u548c A \u5728\u540c\u4e00\u5e73\u9762\u4e48\uff1f\uff08\u8fd9\u4e2a\u8282\u70b9\u4e0b\u6709\u5f88\u591a\u6570\u5b66\u9ad8\u624b\uff0c\u6545\u6b64\u6765\u78b0\u78b0\u8fd0\u6c14\uff09"},"content":{"rendered":"
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\u4e09\u7ef4\u7a7a\u95f4\u4e2d\u4e0d\u5728\u540c\u4e00\u5e73\u9762\u7684\u4e24\u4e2a\u5411\u91cf A \u3001B \u76f8\u52a0\u4e4b\u540e\u7684\u5411\u91cf\u5fc5\u5b9a\u548c A \u5728\u540c\u4e00\u5e73\u9762\u4e48\uff1f\uff08\u8fd9\u4e2a\u8282\u70b9\u4e0b\u6709\u5f88\u591a\u6570\u5b66\u9ad8\u624b\uff0c\u6545\u6b64\u6765\u78b0\u78b0\u8fd0\u6c14\uff09 <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : Hlianbobo <\/span> <\/i> 3<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
http:\/\/www.mathchina.com\/bbs\/forum.php?mod=forumdisplay&fid=5<\/p>\n

\u56e0\u4e3a\u9700\u8981\u914d\u56fe\u8bf4\u660e\uff0c\u56e0\u6b64\u53ea\u597d\u5728\u522b\u7684\u8bba\u575b\u53d1\u5e16\u5b50\uff0c\u7136\u540e\u5c06\u94fe\u63a5\u53d1\u51fa\u6765\u3002\u8fd8\u8bf7\u5404\u4f4d\u79fb\u6b65\u6570\u5b66\u4e2d\u56fd\u770b\u4e00\u4e0b\u6b63\u9898\u3002\u5728\u8fd9\u91cc\u56de\u7b54\u5373\u53ef\u3002\u8c22\u8c22\uff01 <\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (18<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
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    \u8cc7\u6df1\u5927\u4f6c : user8341 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e09\u70b9\u624d\u80fd\u786e\u5b9a\u4e00\u4e2a\u5e73\u9762\u3002<\/p>\n

    \u201c\u201c\u4e24\u4e2a\u5411\u91cf\u4e0d\u5728\u540c\u4e00\u4e2a\u5e73\u9762\u201d\u201d\u2014\u2014\u8fd9\u5b8c\u5168\u662f\u8bf4\u80e1\u8bdd\u3002 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
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    \u8cc7\u6df1\u5927\u4f6c : user8341 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    A \u548c B \u76f8\u52a0\u540e\u5f97\u5230\u5411\u91cf C \u3002C \u5fc5\u7136\u5728 A \u3001B \u6240\u786e\u5b9a\u7684\u5e73\u9762\u5185\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : sNullp <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e13\u95e8\u767b\u9646\u6765\u56de\u590d\uff0c\u4f46\u60f3\u8bf4\u7684\u4e0a\u5df2\u7ecf\u90fd\u8bf4\u4e86\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : Hlianbobo <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @user8341 \u6211\u5728\u8fd9\u91cc\u53d1\u51fa\u7684\u4fe1\u606f\u6709\u9650\uff0c\u6050\u6015\u7ed9\u4f60\u9020\u6210\u8bef\u89e3\u4e86\u3002\u8bf7\u4f60\u770b\u4e00\u4e0b\u539f\u5e16\uff0c\u8c22\u8c22\uff01 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : rrfeng <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u81ea\u7531\u5411\u91cf\u53ef\u4ee5\u968f\u4fbf\u5e73\u79fb\u7684\uff0c\u6240\u4ee5\u4e0d\u5b58\u5728\u300e\u4e0d\u5728\u540c\u4e00\u5e73\u9762\u7684\u4e24\u4e2a\u81ea\u7531\u5411\u91cf\u300f\u3002
    \u53ea\u8981\u79fb\u5230\u9996\u5c3e\u76f8\u8fde\u7684\u4f4d\u7f6e\uff08\u76f8\u52a0\uff09\uff0c\u663e\u7136\u662f\u7ed3\u679c\u5728\u540c\u4e00\u5e73\u9762\u4e0a\u3002<\/p>\n

    \u5982\u679c\u662f\u56fa\u5b9a\u5411\u91cf\uff0c\u90a3\u4e48\u4e24\u4e2a\u4e0d\u5728\u540c\u5e73\u9762\u7684\u5411\u91cf\u65e0\u6cd5\u76f8\u52a0\uff08\u6216\u8005\u8bf4\u5728\u6211\u8ba4\u77e5\u4e2d\u6ca1\u6709\u6709\u610f\u4e49\u7684\u52a0\u6cd5\u64cd\u4f5c\u5b9a\u4e49\uff09\u3002 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
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    \u8cc7\u6df1\u5927\u4f6c : neteroster <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u8bf4\u300c\u5411\u91cf a \u6240\u5728\u7684\u5e73\u9762\u300d\u548c\u300c\u4e0d\u5728\u540c\u4e00\u5e73\u9762\u7684\u4e24\u4e2a\u5411\u91cf\u300d\u8fd9\u6837\u7684\u8bdd\u662f\u5b8c\u5168\u6ca1\u6709\u610f\u4e49\u7684\u3002\u4e00\u822c\u610f\u4e49\u4e0b\uff0c\u5411\u91cf\u53ef\u4ee5\u4efb\u610f\u5e73\u79fb\u3002
    \u6211\u89c9\u5f97\u4f60\u9700\u8981\u7684\u662f\u5411\u91cf\u5171\u9762\u5b9a\u7406\uff1a
    \u300c\u5982\u679c\u4e24\u4e2a\u5411\u91cf a, b \u4e0d\u5171\u7ebf\uff0c\u5219\u5411\u91cf p \u4e0e\u5411\u91cf a, b \u5171\u9762\u7684\u5145\u8981\u6761\u4ef6\u662f\u5b58\u5728\u6709\u5e8f\u5b9e\u6570\u5bf9(x,y) \u4f7f p=xa+yb \u300d
    \u5176\u4e2d\uff0c\u300c\u5411\u91cf\u5171\u9762\u300d\u7684\u5b9a\u4e49\u662f\uff1a\u300c\u80fd**\u5e73\u79fb**\u5230\u4e00\u4e2a\u5e73\u9762\u4e0a\u7684\u4e09\u4e2a\u5411\u91cf\u79f0\u4e3a\u5171\u9762\u5411\u91cf\u3002\u300d <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : Hlianbobo <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @rrfeng \u6211\u5728\u8fd9\u91cc\u53d1\u51fa\u7684\u4fe1\u606f\u6709\u9650\uff0c\u6050\u6015\u7ed9\u4f60\u9020\u6210\u8bef\u89e3\u4e86\u3002\u8bf7\u4f60\u770b\u4e00\u4e0b\u539f\u5e16\uff0c\u8c22\u8c22\uff01 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : Hlianbobo <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @neteroster \u6211\u5728\u8fd9\u91cc\u53d1\u51fa\u7684\u4fe1\u606f\u6709\u9650\uff0c\u6050\u6015\u7ed9\u4f60\u9020\u6210\u8bef\u89e3\u4e86\u3002\u8bf7\u4f60\u770b\u4e00\u4e0b\u539f\u5e16\uff0c\u8c22\u8c22\uff01 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : Hlianbobo <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @sNullp \u6211\u5728\u8fd9\u91cc\u53d1\u51fa\u7684\u4fe1\u606f\u6709\u9650\uff0c\u6050\u6015\u7ed9\u4f60\u9020\u6210\u8bef\u89e3\u4e86\u3002\u8bf7\u4f60\u770b\u4e00\u4e0b\u539f\u5e16\uff0c\u8c22\u8c22\uff01 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : rrfeng <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @Hlianbobo
    \u5c31\u4e0d\u770b\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : lambdafate <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @rrfeng \u54c8\u54c8\u54c8\u54c8\u54c8\u54c8\u54c8 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : finalwave <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5e16\u5b50\u94fe\u63a5\u90fd\u6ca1\u53d1\u5bf9\uff0cGeoGebra \u94fe\u63a5\u4e5f\u6302\u4e86\u3002\u3002\u3002
    \u8be5\u8bf4\u7684\u5185\u5bb9\u8bba\u575b\u91cc\u522b\u4eba\u4e5f\u8bf4\u4e86\uff0c\u8fd9\u91cc\u522b\u4eba\u4e5f\u8bf4\u5b8c\u4e86\u3002\u8fd8\u6ca1\u641e\u61c2\u5efa\u8bae\u56de\u53bb\u7ee7\u7eed\u590d\u4e60\u51e0\u904d\u6559\u6750\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : user8341 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4f60\u7684\u9898\u76ee\uff1ax + y – 2z = 2\uff0c\u8fd9\u4e2a\u5e73\u9762\u4e0d\u662f\u8fc7\u539f\u70b9\u7684\u5e73\u9762\u54e6\u3002
    x + y – 2z = 2 \u8fd9\u4e2a\u5e73\u9762\u662f\uff1a\u8fc7(2, 2, 1)\u70b9\uff0c\u4f5c\u4e00\u4e2a\u4e0e Span(u, v)\u5e73\u884c\u7684\u5e73\u9762\uff0c\u800c\u5f97\u5230\u7684\u90a3\u4e2a\u5e73\u9762\u3002<\/p>\n

    (cost)u + (sint)v \u662f\u4ee5\u539f\u70b9\u4e3a\u4e2d\u5fc3\u7684\u5706\u3002<\/p>\n

    \u5706\u5fc3\u5e73\u79fb\u5230(2, 2, 1)\u70b9\uff0c\u4e5f\u8fd8\u662f\u4e00\u4e2a\u5706\u3002 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
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    \n
    \u8cc7\u6df1\u5927\u4f6c : user8341 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    V \u5411\u91cf\u52a0 U \u5411\u91cf\uff0c\u53ef\u4ee5\u770b\u6210\u662f V \u7684\u7ec8\u70b9\u6cbf\u7740\u4e0e U \u5e73\u884c\u7684\u65b9\u5411\u79fb\u52a8\u4e86|U|\u8ddd\u79bb\uff0c\u5f97\u5230\u4e00\u4e2a\u65b0\u7684\u7ec8\u70b9\u3002
    \u7531\u4e8e u \u3001v \u90fd\u4e0e\u5e73\u9762 x + y – 2z = 2 \u5e73\u884c\uff0c\u6240\u4ee5(2, 2, 1)\u8fd9\u4e2a\u70b9\u79fb\u52a8\u4ee5\u540e\uff0c\u65b0\u7ec8\u70b9\u4ecd\u7136\u5728\u8fd9\u4e2a\u5e73\u9762\u4e0a\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : momocraft <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u90a3\u4e2a mathchina \u8bba\u575b\u6709\u4e2a [\u54e5\u731c\u7b49\u96be\u9898\u548c\u731c\u60f3] \u533a\uff0c\u800c\u4e14\u6709\u591a\u4eba\u8bc1\u660e\u4e86 \u60ca <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : bleepbloop <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5377\u7ffb\u8f66\u4e86\uff0c\u54c8\u54c8\u54c8\u54c8\u54c8\u54c8\u54c8\u54c8<\/p>\n

    \u201c\u4e0d\u5728\u540c\u4e00\u5e73\u9762\u7684\u4e24\u4e2a\u5411\u91cf A \u3001B\u201d <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : bleepbloop <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u770b\u9519\u4e86\uff0c\u4ee5\u4e3a\u662f\u9762\u8bd5\u9898 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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    \u8cc7\u6df1\u5927\u4f6c : wangyzj <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4fe9\u5411\u91cf\u4e00\u5b9a\u4f1a\u5728\u4e00\u4e2a\u5e73\u9762\u5427 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    \u4e09\u7ef4\u7a7a\u95f4\u4e2d\u4e0d\u5728\u540c\u4e00\u5e73\u9762\u7684\u4e24\u4e2a\u5411\u91cf …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/176679"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=176679"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/176679\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=176679"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=176679"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=176679"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}