{"id":155678,"date":"2020-09-07T21:19:03","date_gmt":"2020-09-07T13:19:03","guid":{"rendered":"http:\/\/4563.org\/?p=155678"},"modified":"2020-09-07T21:19:03","modified_gmt":"2020-09-07T13:19:03","slug":"sage-%e8%83%bd%e5%88%a4%e6%96%ad%e7%ba%a7%e6%95%b0%e7%9a%84%e6%95%9b%e6%95%a3%e6%80%a7%e4%b9%88%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=155678","title":{"rendered":"sage \u80fd\u5224\u65ad\u7ea7\u6570\u7684\u655b\u6563\u6027\u4e48\uff1f"},"content":{"rendered":"
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sage \u80fd\u5224\u65ad\u7ea7\u6570\u7684\u655b\u6563\u6027\u4e48\uff1f <\/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
\u5728\u7f51\u4e0a\u641c\u7d22\u4e86\u4e00\u5708\uff0c\u53ef\u4ee5\u627e\u5230 mathematica \u5224\u65ad\u7ea7\u6570\u655b\u6563\u6027\u7684\u8bf4\u660e\u3002\u4f46\u662f sage \u5219\u6ca1\u6709\u627e\u5230\u76f8\u5173\u7684\u6587\u7ae0\u3002\u6c42\u52a9\u8bba\u575b\u5927\u795e\u3002\u662f\u5426\u6709\u8fd9\u65b9\u9762\u7684\u77e5\u8bc6\u5206\u4eab\u3002<\/p>\n

\u53e6\u5916\uff0c\u770b\u4e86\u4e00\u6839 sage \u4e66\u7684\u76ee\u5f55\u3002sage \u4f3c\u4e4e\u53ef\u4ee5\u548c python \u4e0b\u6d41\u884c\u7684\u7b2c\u4e09\u65b9\u5e93\u4e00\u8d77\u4ea4\u4e92\u5de5\u4f5c\u3002\u4e0d\u77e5\u9053 mathematica \u662f\u5426\u6709\u652f\u6301\u4e8e python \u4ea4\u4e92\uff1f <\/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 : necomancer <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u76f4\u63a5 sum\uff0c\u53d1\u6563\u4f1a\u51fa\u9519\u3002
    \u6216\u8005
    try:
    ….sum(exp, x, infinity)
    except:
    ….print(“diverge”)
    \u8fd9\u6837 <\/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
    @necomancer \u8c22\u8c22\u56de\u590d\u3002
    x = var(‘x’)
    try:
    sum(1\/(x^2),x,infinity)
    except:
    print(“diverge”)
    \u7ed3\u679c\u662f\uff1adiverge<\/p>\n

    x = var(‘x,ustar,uend’)
    ustar=1
    uend=oo
    try:
    sum(1\/(x^2),x,ustar,uend)
    except:
    print(“diverge”)
    \u7ed3\u679c\u8fd8\u662f diverge<\/p>\n

    \u6309\u7406\u8bf4\uff1a\u7ea7\u6570 1\/(x^2) \u5728 1 \u5230 oo \u662f\u6536\u655b\u7684\u554a\u3002\u8fd9\u4e2a\u7ed3\u679c\u4e0d\u5bf9\u3002<\/p>\n

    \u8ba1\u7b97\u5730\u5740 https:\/\/sagecell.sagemath.org\/
    \u5728\u8fd9\u91cc\u8fd0\u7b97\u5fc5\u987b\u53bb\u6389 sum \u548c print \u524d\u9762\u7684\u70b9\uff0c\u5426\u5219\u62a5\u9519
    \u53e6\u5916\uff0c\u4e0d\u77e5\u9053\u6709\u4ec0\u4e48 sage \u7684\u4e66\u63a8\u8350\u4e48?\u76ee\u524d\u5728\u8c46\u74e3\u4e0a\u53ea\u627e\u5230\u4e00\u672c\u4e2d\u6587\u4e66\uff0c\u662f sage \u5728\u7269\u7406\u5b66\u4e0a\u7684\u5e94\u7528\uff0c\u867d\u7136\u4e5f\u6d89\u53ca\u5230\u90e8\u5206\u6570\u5b66\u77e5\u8bc6\uff0c\u4f46\u662f\u6570\u5b66\u90e8\u5206\u4e0d\u591f\u5168\u9762\u3002\u4f8b\u5982\u655b\u6563\u6027\u7684\u5224\u65ad\u76ee\u5f55\u4e2d\u5c31\u6ca1\u6709\u6d89\u53ca\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : necomancer <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    sum(1\/x,x, 1, infinity) —- ValueError: Sum is divergent.
    sum(1\/x^2, x, 1, infinity) —- 1\/6*pi^2<\/p>\n

    \u662f\u4e0d\u662f\u4ee3\u7801\u54ea\u6709\u9519\uff1f\u6211\u8fd9\u4e24\u4e2a\u5728\u4f60\u7ed9\u7684\u5730\u65b9\u7b97\u7684\u662f\u5bf9\u7684\u5440\uff0cexpect: \u53ef\u80fd\u8df3\u8fc7\u4e86\u6240\u6709\u9519\u8bef\uff0c\u5e94\u8be5\u662f except ValueError\uff0c\u7ea7\u6570\u53d1\u6563\u597d\u50cf\u662f value error <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : necomancer <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    https:\/\/sagecell.sagemath.org\/?z=eJwrKaq04uVSAIJk2-LSXA1D_QodBSAy1FHIzEvLzMssqdSEyBcUZeaVaCgl5-eVpRalpyrpKCQDZVIrklMLShTCEnNKU12LivKLrFBUp2RCFANVlmDaFGdErF2kWAUAT10-VA==&lang=sage&interacts=eJyLjgUAARUAuQ== <\/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
    @necomancer \u725b\u3002\u6709\u6548\u3002\u8bf7\u95ee\u4f60\u662f\u5728\u54ea\u91cc\u5b66\u7684 sage \u7684\u4f7f\u7528\u65b9\u6cd5\u3002\u6709\u597d\u7684\u4e2d\u6587\u8d44\u6599\u63a8\u8350\u4e48\uff1f\u6211\u5728 sage \u5b98\u7f51\u4e0a\u4e0b\u8f7d\u4e86\u4e24\u9875\u4e2d\u6587\u8bf4\u660e\uff0c\u90fd\u662f 2009 \u5e74\u7684\uff0c\u53ea\u6709\u4e24\u9875 pdf \u3002\u6bd4\u8f83\u7b80\u5355\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : necomancer <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @Hlianbobo \u5b66\u70b9 python \u5c31\u884c\u3002sage \u770b\u6587\u6863\u5c31\u597d\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    sage \u80fd\u5224\u65ad\u7ea7\u6570\u7684\u655b\u6563\u6027\u4e48\uff1f …<\/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\/155678"}],"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=155678"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/155678\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=155678"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=155678"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=155678"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}