{"id":1838,"date":"2021-03-29T08:33:19","date_gmt":"2021-03-29T00:33:19","guid":{"rendered":"http:\/\/www.xuehelp.cn\/?p=1838"},"modified":"2021-03-29T08:33:19","modified_gmt":"2021-03-29T00:33:19","slug":"%e6%9f%90%e6%a0%a1%e8%ae%a1%e5%88%92%e4%b8%ba%e6%95%99%e5%b8%88%e8%b4%ad%e4%b9%b0%e7%94%b2%e3%80%81%e4%b9%99%e4%b8%a4%e7%a7%8d%e8%af%8d%e5%85%b8","status":"publish","type":"post","link":"http:\/\/www.xuehelp.cn\/index.php\/archives\/1838","title":{"rendered":"\u67d0\u6821\u8ba1\u5212\u4e3a\u6559\u5e08\u8d2d\u4e70\u7532\u3001\u4e59\u4e24\u79cd\u8bcd\u5178"},"content":{"rendered":"

\u3010\u7b54\u6848\u3011<\/b><\/strong>(1)\u8bbe\u6bcf\u672c\u7532\u79cd\u8bcd\u5178\u7684\u4ef7\u683c\u4e3a<\/b><\/strong>x<\/i><\/b><\/em><\/strong>\u5143,\u6bcf\u672c\u4e59\u79cd\u8bcd\u5178\u7684\u4ef7\u683c\u4e3a<\/b><\/strong>y<\/i><\/b><\/em><\/strong>\u5143<\/b><\/strong>.<\/i><\/b><\/em><\/strong><\/p>\n

\u4f9d\u9898\u610f,\u5f97<\/b><\/strong>\u89e3\u5f97x+2y=170,2x+3y=290 ,x=70,y=50<\/b><\/strong><\/p>\n

\u7b54:\u6bcf\u672c\u7532\u79cd\u8bcd\u5178\u7684\u4ef7\u683c\u4e3a70\u5143,\u6bcf\u672c\u4e59\u79cd\u8bcd\u5178\u7684\u4ef7\u683c\u4e3a50\u5143<\/b><\/strong>.<\/i><\/b><\/em><\/strong><\/p>\n

(2)\u8bbe\u5b66\u6821\u8d2d\u4e70\u7532\u79cd\u8bcd\u5178<\/b><\/strong>m<\/i><\/b><\/em><\/strong>\u672c,\u5219\u8d2d\u4e70\u4e59\u79cd\u8bcd\u5178(30-<\/b><\/strong>m<\/i><\/b><\/em><\/strong>)\u672c<\/b><\/strong>.<\/i><\/b><\/em><\/strong><\/p>\n

\u4f9d\u9898\u610f,\u5f9770<\/b><\/strong>m<\/i><\/b><\/em><\/strong>+50(30-<\/b><\/strong>m<\/i><\/b><\/em><\/strong>)<\/b><\/strong>\u2264<\/b><\/strong>1600,\u89e3\u5f97<\/b><\/strong>m<\/i><\/b><\/em><\/strong>\u2264<\/b><\/strong>5<\/b><\/strong>.<\/i><\/b><\/em><\/strong><\/p>\n

\u7b54:\u5b66\u6821\u6700\u591a\u53ef\u8d2d\u4e70\u7532\u79cd\u8bcd\u51785\u672c<\/b><\/strong>.<\/i><\/b><\/em><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

\u67d0\u6821\u8ba1\u5212\u4e3a\u6559\u5e08\u8d2d\u4e70\u7532\u3001\u4e59\u4e24\u79cd\u8bcd\u5178.\u5df2\u77e5\u8d2d\u4e701\u672c\u7532\u79cd\u8bcd\u5178\u548c2\u672c\u4e59\u79cd\u8bcd\u5178\u5171\u9700170\u5143,\u8d2d\u4e702\u672c\u7532\u79cd\u8bcd\u5178\u548c3\u672c\u4e59\u79cd\u8bcd […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[593],"_links":{"self":[{"href":"http:\/\/www.xuehelp.cn\/index.php\/wp-json\/wp\/v2\/posts\/1838"}],"collection":[{"href":"http:\/\/www.xuehelp.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.xuehelp.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.xuehelp.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.xuehelp.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1838"}],"version-history":[{"count":1,"href":"http:\/\/www.xuehelp.cn\/index.php\/wp-json\/wp\/v2\/posts\/1838\/revisions"}],"predecessor-version":[{"id":1839,"href":"http:\/\/www.xuehelp.cn\/index.php\/wp-json\/wp\/v2\/posts\/1838\/revisions\/1839"}],"wp:attachment":[{"href":"http:\/\/www.xuehelp.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1838"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.xuehelp.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1838"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.xuehelp.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1838"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}