{"id":162114,"date":"2020-09-30T05:54:23","date_gmt":"2020-09-29T21:54:23","guid":{"rendered":"http:\/\/4563.org\/?p=162114"},"modified":"2020-09-30T05:54:23","modified_gmt":"2020-09-29T21:54:23","slug":"3x28xy2y2-30-%e5%af%b9-x-%e6%b1%82%e5%af%bc%e3%80%82%e5%a6%82%e6%9e%9c%e7%94%a8-sympy-%e6%88%96-sage-%e6%b1%82%e5%af%bc%e5%87%bd%e6%95%b0%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=162114","title":{"rendered":"3*(x^2)+8*x*y+2*(y^2)-3=0 \u5bf9 x \u6c42\u5bfc\u3002\u5982\u679c\u7528 sympy \u6216 sage \u6c42\u5bfc\u51fd\u6570\uff1f"},"content":{"rendered":"
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3*(x^2)+8*x*y+2*(y^2)-3=0 \u5bf9 x \u6c42\u5bfc\u3002\u5982\u679c\u7528 sympy \u6216 sage \u6c42\u5bfc\u51fd\u6570\uff1f <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : Hlianbobo <\/span> <\/i> 0<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
3*(x^2)+8*x*y+2*(y^2)-3=0 \u5bf9 x \u6c42\u5bfc \u7528 sympy \u6216 sage \u5982\u4f55\u5199\u4ee3\u7801\u5462\uff1f\u56e0\u4e3a\u539f\u9898\u6ca1\u6709\u76f4\u63a5\u7ed9\u51fa y=x \u7684\u8868\u8fbe\u5f0f\u3002\u5982\u679c\u7528\u4ee3\u7801\u6c42\u89e3\u3002\u9700\u8981\u7b2c\u4e00\u6b65\u5148\u89e3\u65b9\u7a0b\u4e48\uff1f\u7136\u540e\u518d\u5bf9 y \u7684\u89e3\u6c42\u5bfc\u6570\uff1f<\/p>\n

\u662f\u5426\u6709\u4e00\u6b65\u5230\u4f4d\u6c42\u5bfc\u6570\u7684\u89e3\u6cd5\uff1f\u7528\u4ee3\u7801\u5b9e\u73b0\u3002 <\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (6<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : InkStone <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u76f4\u63a5\u5bf9\u65b9\u7a0b\u4e24\u8fb9\u6c42\u5bfc\uff0cy \u662f\u4e00\u4e2a x \u7684\u51fd\u6570\uff0c\u6240\u4ee5\u5173\u4e8e y \u7684\u6c42\u5bfc\u90fd\u9002\u7528\u590d\u5408\u51fd\u6570\u6c42\u5bfc<\/p>\n

    \u6bd4\u5982 (xy)’ = x’y + y’x = y+y’x <\/p>\n

    \u8fd9\u91cc\u6ce8\u610f\uff0c\u4f60\u6700\u7ec8\u8981\u6c42\u7684\u5c31\u662f y’\u3002<\/p>\n

    \u6240\u4ee5\u6c42\u5b8c\u5bfc\u4e4b\u540e\uff0c\u628a y’\u653e\u4e00\u8fb9\uff0c\u5176\u5b83\u6240\u6709\u5f0f\u5b50\u653e\u53e6\u4e00\u8fb9\uff0c\u518d\u60f3\u529e\u6cd5\u628a y \u6d88\u6389\uff0c\u5e94\u8be5\u5c31\u53ef\u4ee5\u4e86\u3002 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : crackhopper <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u9996\u5148 x,y \u662f\u4e0d\u662f\u5173\u8054\u7684\uff0c\u8fd8\u90fd\u662f\u81ea\u53d8\u91cf\uff0c\u8fd9\u4e2a\u5f88\u91cd\u8981\u3002\u770b\u4f60\u7684\u63cf\u8ff0\u5e94\u8be5\u662f\u6709\u5173\u7cfb\u7684\u3002\u5982\u679c\u662f\u6709\u5173\u7cfb\u7684\uff0c\u6309\u7167\u4f60\u8fd9\u4e2a\u5199\u6cd5\uff0c\u53cd\u89e3 y \u4e5f\u5f88\u5bb9\u6613\uff0c\u4e3a\u4f55\u4e0d\u53cd\u89e3\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : Vinty <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4f60\u7684\u610f\u601d\u662f
    \u5df2\u77e5 f(x,y)=0
    \u6c42 y’ = g\u2018(x)?
    \u90a3\u53ea\u80fd\u5148\u89e3\u51fa y=g(x)\uff0c\u624d\u80fd\u7b97\u51fa y’\uff0c\u4f46\u662f\u8fd9\u79cd\u4e0d\u4e00\u5b9a\u6709\u89e3\u6790\u89e3<\/p>\n

    \u6211\u89c9\u5f97\u4f60\u7684\u63d0\u95ee\u53ef\u80fd\u662f\u4e00\u4e2a XY \u95ee\u9898 <\/p><\/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
    @InkStone \u8c22\u8c22\u56de\u590d\uff0c\u4f60\u8bb2\u7684\u5e2e\u6211\u6253\u5f00\u4e86\u601d\u8def\u3002\u6211\u624b\u5de5\u53bb\u9a8c\u8bc1\u4e00\u4e0b\u3002\u8bf7\u95ee\u7c7b\u4f3c\u95ee\u9898 sympy \u6216 sage \u4ee3\u7801\u600e\u4e48\u5199\uff1f <\/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
    @InkStone \u6211\u9a8c\u8bc1\u4e86\u4e00\u4e0b y’=(-3x-4y)\/(4x+2y) \u4f46\u662f\u53f3\u8fb9\u7684 y \u6211\u60f3\u4e0d\u51fa\u6765\u5982\u4f55\u6d88\u9664\u6389 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : helloworld000 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5982\u679c\u8981\u7f16\u7a0b\u5b9e\u73b0\u7684\u8bdd\uff0c\u6c42\u5bfc\u8fd8\u662f\u8981\u7528 chain rule \u505a autograd<\/p>\n

    \u4f60\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b tensorflow\uff0cpytorch \u8fd8\u6709 mxnet \u8fd9\u4e9b\u600e\u4e48\u505a\u7684 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n","protected":false},"excerpt":{"rendered":"

    3*(x^2)+8*x*y+2*(…<\/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\/162114"}],"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=162114"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/162114\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=162114"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=162114"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=162114"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}