{"id":166652,"date":"2020-10-01T12:41:18","date_gmt":"2020-10-01T04:41:18","guid":{"rendered":"http:\/\/4563.org\/?p=166652"},"modified":"2020-10-01T12:41:18","modified_gmt":"2020-10-01T04:41:18","slug":"sage-%e5%9c%a8%e5%90%8c%e4%b8%80%e9%81%93%e9%a2%98%e4%b8%8d%e5%90%8c%e6%ad%a5%e5%8c%96%e7%ae%80%e9%98%b6%e6%ae%b5%e6%b1%82%e4%b8%8d%e5%ae%9a%e7%a7%af%e5%88%86%e3%80%82%e5%be%97%e5%88%b0%e7%9a%84","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=166652","title":{"rendered":"sage \u5728\u540c\u4e00\u9053\u9898\u4e0d\u540c\u6b65\u5316\u7b80\u9636\u6bb5\u6c42\u4e0d\u5b9a\u79ef\u5206\u3002\u5f97\u5230\u7684\u7ed3\u679c\u5374\u4e0d\u4e00\u6837\uff0c\u8fd9\u662f\u4e3a\u4ec0\u4e48?"},"content":{"rendered":"
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sage \u5728\u540c\u4e00\u9053\u9898\u4e0d\u540c\u6b65\u5316\u7b80\u9636\u6bb5\u6c42\u4e0d\u5b9a\u79ef\u5206\u3002\u5f97\u5230\u7684\u7ed3\u679c\u5374\u4e0d\u4e00\u6837\uff0c\u8fd9\u662f\u4e3a\u4ec0\u4e48? <\/h1>\n

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\u8cc7\u6df1\u5927\u4f6c : Hlianbobo <\/span> <\/i> 3<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
\u8bf7\u770b\u94fe\u63a5\u4e2d\u7684\u8fd9\u9053\u9898\u89e3\u5173\u4e8e L \u7684\u4e0d\u5b9a\u79ef\u5206\uff1a http:\/\/www.mathchina.com\/bbs\/data\/attachment\/forum\/202010\/08\/182145aridzif5jrcv5zko.jpg<\/p>\n

\u5f53\u4f7f\u7528 sage \u4ece(2-2cos(\u03b8))\u7684\u4e0d\u5b9a\u79ef\u5206\u65f6\uff0c\u5f97\u5230\u5982\u4e0b\u7ed3\u679c\uff1a https:\/\/sagecell.sagemath.org\/?z=eJyrsC1LLNJQr1DX5MpJLEmt0MjMK0lNL0rM0dAw0jXSSs4v1qjQ1Iwz0DPVAdIAW0IN5Q==&lang=sage&interacts=eJyLjgUAARUAuQ==<\/p>\n

\u4f46\u662f\u5f53\u4f7f\u7528 sage \u4ece 2*sin(\u03b8\/2)\u8fd9\u4e00\u6b65 \u5f00\u59cb\u8ba1\u7b97\u4e0d\u5b9a\u79ef\u5206\u7684\u65f6\u5019\u5c31\u4f1a\u5f97\u5230\u5982\u4e0b\u7ed3\u679c\uff1a https:\/\/sagecell.sagemath.org\/?z=eJyrsC1LLNJQr1DX5MpJLEmt0MjMK0lNL0rM0dAw0irOzNOo0DfS1NSp0NQEACcyDPs=&lang=sage&interacts=eJyLjgUAARUAuQ==<\/p>\n

\u8be5\u7ed3\u679c\u4e0e\u56fe\u7247\u4e2d\u7684\u7ed3\u679c\u4e00\u81f4\u3002\u8bf7\u95ee\u9020\u6210\u4ee5\u4e0a\u7ed3\u679c\u5dee\u5f02\u662f\u56e0\u4e3a\u5012\u6570\u7b2c\u4e09\u6b65 \u5230 \u5012\u6570\u7b2c\u4e8c\u6b65 \u6c42\u7edd\u5bf9\u503c\u7ed3\u679c\u9020\u6210\u7684\u4e48\uff1f\u5982\u679c\u662f\u3002\u90a3\u4e48\u5728\u6211\u4eec\u90a3\u4f7f\u7528 sage \u6216 mathematics \u6216 sympy \u7b49\u5de5\u5177\u8ba1\u7b97\u89e3\u6790\u89e3\u65f6\u5e94\u8be5\u5982\u4f55\u8bbe\u7f6e\uff0c\u624d\u80fd\u907f\u514d\u8ba1\u7b97\u7ed3\u679c\u51fa\u73b0\u7c7b\u4f3c\u9519\u8bef\uff1f <\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (2<\/span>) <\/div>\n
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    \u8cc7\u6df1\u5927\u4f6c : mathzhaoliang <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e0d\u5b9a\u79ef\u5206\u8ba1\u7b97\u7684\u662f\u539f\u51fd\u6570\uff0c\u4e24\u4e2a\u79ef\u5206\u9879 sqrt(2-2cosx) \u4e0e 2sinx\/2 \u53ea\u662f\u5728 [0,2pi] \u533a\u95f4\u4e0a\u76f8\u7b49\uff0c\u5b83\u4fe9\u7684\u539f\u51fd\u6570\u533a\u522b\u5f88\u5927\uff0csage \u5e76\u6ca1\u6709\u7b97\u9519\u3002\u8ba1\u7b97\u6570\u503c\u79ef\u5206\u4f60\u9700\u8981\u6307\u5b9a\u79ef\u5206\u533a\u95f4\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : Hlianbobo <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @mathzhaoliang \u4f60\u8bf4\u7684\u5bf9\u3002\u6211\u8d5e\u540c\u4f60\u7684\u7ed3\u8bba\u3002\u6211\u7684\u56f0\u60d1\u5728\u4e8e\u5982\u4f55\u8ba9\u6570\u5b66\u8f6f\u4ef6\u7ed9\u51fa\u6b63\u786e\u7684\u89e3\u6790\u89e3\u548c\u6570\u503c\u89e3\u3002\u907f\u514d\u6211\u4eec\u5728\u4f7f\u7528\u8f6f\u4ef6\u7684\u65f6\u5019\u9677\u5165\u6c89\u9ed8\u9519\u8bef\u800c\u4e0d\u77e5\u3002<\/p>\n

    \u4e3e\u4e2a\u4e0e\u4e0a\u9898\u7a0d\u7a0d\u4e0d\u540c\u7684\u4f8b\u5b50\uff08\u51cf\u53f7\u53d8\u52a0\u53f7\uff09\uff0c\u56e0\u4e3a\u6211\u521a\u521a\u9a8c\u8bc1\u8fc7\u3002sqrt(2+2cosx) \u3002\u5f00\u6839\u53f7\u540e\u5f97\u5230 abs(2cos(\u03b8\/2)) \uff0c\u5982\u679c\u6211\u4eec\u8981\u6c42\u8fd9\u4e2a\u7edd\u5bf9\u503c\u7684\u4e0d\u5b9a\u79ef\u5206\u6216 0 \u5230 2pi \u7684\u6570\u503c\u79ef\u5206\u3002\u5047\u8bbe\u6211\u4eec\u5728\u8003\u8bd5\u3002
    \u90a3\u4e48\u4e0d\u5b9a\u79ef\u5206\u5e94\u8be5\u5199\u6210\uff1a\u03b8\u5c5e\u4e8e 0-pi\uff1a 4sin(\u03b8\/2)
    \u03b8\u5c5e\u4e8e pi-2pi\uff1a -4sin(\u03b8\/2)
    \u6570\u503c\u79ef\u5206\u5f53\u7136\u5e94\u8be5\u5728\u4e0d\u540c\u533a\u95f4\u4ee3\u5165\u4e0d\u540c\u89e3\u6790\u89e3\u6c42\u89e3\u3002
    \u8fbe\u5230\u4ee5\u4e0a\u6807\u51c6\u624d\u80fd\u5f97\u5206\u3002<\/p>\n

    \u90a3\u4e48\u6211\u4eec\u4f7f\u7528\u6570\u5b66\u8f6f\u4ef6\uff0c\u5982\u4f55\u5199\u4ee3\u7801\u624d\u80fd\u907f\u514d\u4e0a\u8ff0\u6c89\u9ed8\u9519\u8bef\uff0c\u5f97\u5230\u5b8c\u6574\u7684\u6b63\u786e\u7b54\u6848\uff1f <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

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

    sage \u5728\u540c\u4e00\u9053\u9898\u4e0d\u540c\u6b65\u5316\u7b80\u9636\u6bb5…<\/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\/166652"}],"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=166652"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/166652\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=166652"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=166652"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=166652"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}