{"id":157533,"date":"2020-09-07T00:15:25","date_gmt":"2020-09-06T16:15:25","guid":{"rendered":"http:\/\/4563.org\/?p=157533"},"modified":"2020-09-07T00:15:25","modified_gmt":"2020-09-06T16:15:25","slug":"sage-%e6%b1%82%e6%b3%b0%e5%8b%92%e7%ba%a7%e6%95%b0%e5%b1%95%e5%bc%80%ef%bc%8c%e7%bb%93%e6%9e%9c%e6%98%af%e4%bb%8e%e5%8f%b3%e5%be%80%e5%b7%a6%e6%8e%92%e5%88%97%e7%9a%84%e3%80%82%e8%af%b7%e9%97%ae","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=157533","title":{"rendered":"sage \u6c42\u6cf0\u52d2\u7ea7\u6570\u5c55\u5f00\uff0c\u7ed3\u679c\u662f\u4ece\u53f3\u5f80\u5de6\u6392\u5217\u7684\u3002\u8bf7\u95ee\u6709\u4ec0\u4e48\u529e\u6cd5\u66f4\u6539\u6392\u5217\u65b9\u5411\u4e48\uff1f"},"content":{"rendered":"
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sage \u6c42\u6cf0\u52d2\u7ea7\u6570\u5c55\u5f00\uff0c\u7ed3\u679c\u662f\u4ece\u53f3\u5f80\u5de6\u6392\u5217\u7684\u3002\u8bf7\u95ee\u6709\u4ec0\u4e48\u529e\u6cd5\u66f4\u6539\u6392\u5217\u65b9\u5411\u4e48\uff1f <\/h1>\n

<\/p>\n

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\u8cc7\u6df1\u5927\u4f6c : Hlianbobo <\/span> <\/i> 5<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
u = var(‘u’)
taylor((u\/2+1)^(-2),u,0,4)<\/p>\n

\u6c42\u51fa\u7684\u7ed3\u679c\u5982\u4e0b\uff1a
5\/16*u^4 – 1\/2*u^3 + 3\/4*u^2 – u + 1<\/p>\n

\u8fd9\u4e2a\u5373\u4fbf\u6539\u6210 latex \u8f93\u51fa\uff0c\u4ecd\u7136\u662f\u4ece\u53f3\u5f80\u5de6\u6392\u5217\u7684\u7ea7\u6570\u3002\u8bf7\u95ee\u6709\u4ec0\u4e48\u529e\u6cd5\u6539\u53d8\u6392\u5217\u65b9\u5411\u4e48\uff1f <\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (7<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : Tony042 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u989d\uff0c\u76f4\u63a5\u7528\u77e9\u9635\u624b\u52a8\u5199\u4ee3\u7801\u505a\u57fa\u53d8\u6362\u5427 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : Tony042 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u628a basis \u6389\u4e00\u4e2a\u4e2a <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : noqwerty <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    import re<\/p>\n

    x = “5\/16*u^4 – 1\/2*u^3 + 3\/4*u^2 – u + 1”
    ” “.join(re.split(r’s([-+])s’, x)[::-1]) <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
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    \u8cc7\u6df1\u5927\u4f6c : mathzhaoliang <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u8bd5\u8bd5 taylor((u\/2+1)^(-2),u,0,4).series(x, 4) ? <\/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
    @Tony042 \u8bf7\u95ee\u5177\u4f53\u600e\u4e48\u6389\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
    @noqwerty \u5355\u72ec\u5904\u7406 x = “5\/16*u^4 – 1\/2*u^3 + 3\/4*u^2 – u + 1” \u4f60\u63d0\u4f9b\u7684\u65b9\u6cd5\u662f\u6709\u6548\u7684\u3002
    \u4f46\u662f\u5982\u679c x=taylor((u\/2+1)^(-2),u,0,4)\uff0c\u518d\u505a\u5904\u7406\u4f1a\u62a5\u9519\u3002
    \u6240\u4ee5\u8fd8\u662f\u505a\u4e0d\u5230\u81ea\u52a8\u5c06\u7ed3\u679c\u7ffb\u8f6c\u8fc7\u6765\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : Tony042 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @Hlianbobo google \u57fa\u53d8\u6362… \u6216\u8005\u770b Gilbert Strange The introduction to linear algebra <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    sage \u6c42\u6cf0\u52d2\u7ea7\u6570\u5c55\u5f00\uff0c\u7ed3\u679c\u662f\u4ece…<\/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\/157533"}],"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=157533"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/157533\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=157533"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=157533"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=157533"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}