{"id":1264,"date":"2020-07-11T13:14:12","date_gmt":"2020-07-11T05:14:12","guid":{"rendered":"https:\/\/www.study-together.com\/edu\/?page_id=1264"},"modified":"2020-11-02T23:52:28","modified_gmt":"2020-11-02T15:52:28","slug":"simultaneous-linear-equations","status":"publish","type":"page","link":"https:\/\/www.study-together.com\/edu\/secondary\/form2_maths\/simultaneous-linear-equations\/","title":{"rendered":"5. \u806f\u7acb\u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b (Simultaneous Linear Equations)"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"1264\" class=\"elementor elementor-1264\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d08f411 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d08f411\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-87d955f\" data-id=\"87d955f\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f5117a7 elementor-widget elementor-widget-text-editor\" data-id=\"f5117a7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\u8981\u4e86\u89e3\u54a9\u4fc2\u806f\u7acb\u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b\uff0c\u5176\u5be6\u53ef\u4ee5\u5f9e\u500b\u540d\u958b\u59cb\u3002<\/p><ul><li style=\"list-style-type: none;\"><ul><li>\u300c\u5143\u300d\u4fc2\u6307\u8b8a\u6578\uff0c\u800c\u4e8c\u5143\u65b9\u7a0b\u4fc2\u6307\u65b9\u7a0b\u4e2d\u6709\u5169\u500b\u8b8a\u6578\u51fa\u73fe\u3002<\/li><li>\u300c\u4e00\u6b21\u300d\u4fc2\u6307\u8b8a\u6578\u5605\u6b21\u6578\u6700\u9ad8\u4fc21\u3002<\/li><li>\u300c\u806f\u7acb\u300d\u4fc2\u6307\u8981\u540c\u6642\u6210\u7acb\u3002<\/li><\/ul><\/li><\/ul><p>\u6211\u5730\u898b\u7747\u4e00\u500b\u89e3\u300c\u4e00\u5143\u4e00\u6b21\u65b9\u7a0b\u300d\u5605\u4f8b\u5b50\u3002<br \/>\u4f8b1\uff1a<br \/>\\(\\begin{align}<br \/>\\quad \\quad 3x + 5 &amp; = 8 \\\\<br \/>3x &amp; = 3 \\\\<br \/>x &amp; = 1<br \/>\\end{align}\\)<\/p><p>\u5047\u5982\u6211\u6bd4\u4e00\u689d\u300c\u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b\u300d\u8981\u4f60\u89e3\u5462?\u4f8b\u5982\u65b9\u7a0b\u4fc2<br \/>\\(\\begin{align}<br \/>&amp; \\quad \\quad x &#8211; y = 2 \\\\<br \/>&amp; \u4f60\u6703\u767c\u73fe\u4fc2\u4f60\u8a08\u5514\u5230\u4e00\u500b&#8221;\u660e\u78ba&#8221;\u5605\u89e3(\u5373)\u7b54\u6848\u3002\\\\<br \/>&amp; \u76f8\u53cd\uff0c\u7b54\u6848\u4fc2\u6709\u7121\u9650\u5605\u53ef\u80fd\u6027\u3002\\\\<br \/>&amp; \u4f8b\u5982\u300cx=3, y=1\u300d\u3001\u300cx=4, y=2\u300d\u3001\u300cx=5, y=3\u300d\u3001\u300cx=7, y=5\u300d\u7b49\u3002<br \/>\\end{align}\\)<\/p><p>\u4f46\u5982\u679c\u6211\u6bd4\u591a\u500b\u9650\u5236\u4f60\uff0c\u540c\u6642\u8981\u6c42 x + y = 4\u5462?\u5481\u4f60\u6703\u767c\u73fe\u9664\u5497\u300cx=3, y=1\u300d\u4e4b\u5916\uff0c\u5176\u4ed6\u7d44\u5408\u4f8b\u5982\u300cx=4, y=2\u300d\u3001\u300cx=5, y=3\u300d\u3001\u300cx=7, y=5\u300d\u7b49\u90fd\u5514\u6703\u7b26\u5408\u6211\u5f8c\u52a0\u5605\u65b9\u7a0b\u3002\u56e0\u6b64\uff0c\u6211\u5730\u6703\u8a71\u4f9d\u500b\u806f\u7acb\u65b9\u7a0b\u5605\u89e3\u4fc2\u300cx=3, y=1\u300d\u3002<\/p><p>\u7531\u4e0a\u9762\u5605\u4f8b\u5b50\uff0c\u4f60\u61c9\u6703\u767c\u73fe\u7576\u6709\u5169\u500b\u8b8a\u6578\u5605\u6642\u5019\uff0c\u8981\u8a08\u5230\u4e00\u500b\u552f\u4e00\u5605\u89e3\u4fc2\u8981\u6709\u5169\u689d\u65b9\u686f\u5605\u3002\u5c31\u4fc2\u4f9d\u500b\u539f\u56e0\uff0c\u6240\u4ee5\u5148\u6709\u300c\u806f\u7acb\u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b\u300d\u9019\u4e00\u8ab2\u3002<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-218b8af elementor-widget elementor-widget-text-editor\" data-id=\"218b8af\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>5.1\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u89e3\u806f\u7acb\u65b9\u7a0b\u4e4b\u65b9<\/h2><h3>5.1.1\u00a0 \u4ee3\u5165\u6d88\u5143\u6cd5 (Method of Substitution)<\/h3><p>\u4ee3\u5165\u6d88\u5143\u6cd5\u4fc2\u6307<\/p><ul><li style=\"list-style-type: none;\"><ul><li>\u5148\u5f9e\u5176\u4e2d\u4e00\u689d\u65b9\u7a0b\uff0c\u5229\u7528\u4e3b\u9805\u8b8a\u63db\u5605\u6280\u5de7\uff0c\u628a\u5176\u4e2d\u4e00\u500b\u8b8a\u6578\u5beb\u6210\u4e3b\u9805(\u5373 y = \u54a9\u54a9\u54a9\uff0c\u6216 x = \u54a9\u54a9\u54a9)<\/li><li>\u518d\u628a\u9019\u95dc\u4fc2\u4ee3\u5165\u53e6\u5916\u4e00\u689d\u65b9\u7a0b\u3002\u9019\u6a23\u505a\u7684\u7d50\u679c\u662f\u9019\u689d\u65b9\u7a0b\u5c31\u53ea\u6709\u4e00\u500b\u8b8a\u6578\u3002\u4e4b\u5f8c\u5c31\u53ef\u4ee5\u5229\u7528\u4e00\u822c\u5605\u89e3\u65b9\u7a0b\u6280\u5de7\u569f\u8a08\u51fa\u8b8a\u6578\u7684\u7b54\u6848\u3002<\/li><li>\u6700\u5f8c\u518d\u628a\u7b54\u6848\u4ee3\u5165\u96a8\u4fbf\u7684\u4e00\u689d\u65b9\u7a0b\uff0c\u5481\u5c31\u53ef\u4ee5\u8a08\u5230\u53e6\u4e00\u500b\u8b8a\u6578\u7684\u7b54\u6848\u3002<\/li><\/ul><\/li><\/ul><p style=\"text-align: left;\">\u4f8b2\uff1a \u89e3\u4ee5\u4e0b\u806f\u7acb\u65b9\u7a0b<br \/>\\(\\quad \\quad \\left\\{\\begin{matrix}<br \/>&amp; x + 2y = 3 \\quad &amp;&amp; &#8212;&#8212; (1)\\\\<br \/>&amp; 3x + 2y = 5 \\quad &amp;&amp; &#8212;&#8212; (2)<br \/>\\end{matrix}\\right.\\)<br \/>\u89e3\uff1a<br \/>\\(\\begin{align}<br \/>\\quad \u5f9e (1)\uff0c\\quad \\quad \\quad \\\\<br \/>\\quad \\quad \u3000x &amp; = 3 &#8211; 2y\u00a0 \\quad \\quad &#8212;- (3)\\\\<br \/>\u628a (3) \u4ee3\u5165 (2)\uff0c\\\\<br \/>\\quad 3(3 &#8211; 2y) + 2y &amp; = 5 \\\\<br \/>9 &#8211; 6y + 2y &amp; = 5 \\\\<br \/>-4y &amp; = -4 \\\\<br \/>y &amp; = 1 \\\\<br \/>\u628a\u00a0 y = 1\u4ee3\u5165 (3) &amp;&amp; \\\\<br \/>x &amp; = 3 &#8211; 2(1) = 1 \\\\<br \/>\\therefore \\quad \u00a0 \u65b9\u7a0b\u7d44\u7684\u89e3\u662f&amp; x = 1\uff0cy = 1\u3002&amp;&amp;<br \/>\\end{align}\\)<\/p><h3>5.1.2\u00a0 \u52a0\u6e1b\u6d88\u5143\u6cd5 (Method of Elimination)<\/h3><p>\u52a0\u6e1b\u6d88\u5143\u6cd5\u4fc2\u6307<\/p><ul><li style=\"list-style-type: none;\"><ul><li>\u5148\u900f\u904e\u4e58\u5927\u5169\u689d\u65b9\u7a0b\uff0c\u4f7f\u7576\u4e2d\u67d0\u4e00\u8b8a\u6578\u524d\u7684\u6578\u5b57\u8b8a\u6210\u4e00\u6a23<\/li><li>\u518d\u5c07\u5169\u689d\u516c\u5f0f\u76f8\u52a0(\u6216\u76f8\u6e1b)\u3002\u9019\u6a23\u505a\u7684\u7d50\u679c\u662f\u9019\u689d\u65b9\u7a0b\u5c31\u53ea\u6709\u4e00\u500b\u8b8a\u6578\u3002\u4e4b\u5f8c\u5c31\u53ef\u4ee5\u5229\u7528\u4e00\u822c\u5605\u89e3\u65b9\u7a0b\u6280\u5de7\u569f\u8a08\u51fa\u8b8a\u6578\u7684\u7b54\u6848\u3002<\/li><li>\u6700\u5f8c\u518d\u628a\u7b54\u6848\u4ee3\u5165\u96a8\u4fbf\u7684\u4e00\u689d\u65b9\u7a0b\uff0c\u5481\u5c31\u53ef\u4ee5\u8a08\u5230\u53e6\u4e00\u500b\u8b8a\u6578\u7684\u7b54\u6848\u3002<\/li><\/ul><\/li><\/ul><p>\u4f8b3\uff1a \u89e3\u4ee5\u4e0b\u806f\u7acb\u65b9\u7a0b<br \/>\\(\\quad \\quad \\left\\{\\begin{matrix}<br \/>&amp; 3x + 2y = 1 \\quad &amp;&amp; &#8212;&#8212; (1)\\\\<br \/>&amp; x &#8211; y = -3 \\quad &amp;&amp; &#8212;&#8212; (2)<br \/>\\end{matrix}\\right.\\)<br \/>\u89e3\uff1a<br \/>\\(\\begin{align}<br \/>\\quad (2) \\times 2\uff0c\\\\<br \/>\\quad \\quad\u30002x &#8211; 2y &amp; = -6\u00a0 \\quad \\quad &#8212;- (3)\\\\<br \/>(1) +\u00a0 (3)\uff0c\\\\<br \/>\\quad 5x &amp; = -5 \\\\<br \/>x &amp; = -1 \\\\<br \/>\u628a\u00a0 x = -1\u4ee3\u5165 (2) &amp;&amp; \\\\<br \/>(-1) &#8211; y &amp; = -3 \\\\<br \/>y &amp; = 2 \\\\<br \/>\\therefore \\quad \u00a0 \u65b9\u7a0b\u7d44\u7684\u89e3\u662f&amp; x = -1\uff0cy = 2\u3002<br \/>\\end{align}\\)<\/p><h3>5.1.3\u00a0 \u5716\u89e3\u6cd5 (Graphical Method)<\/h3><p>\u55ba\u5750\u6a19\u5e7e\u4f55\u5165\u9762\uff0c\u5927\u5bb6\u61c9\u5b78\u904e<br \/>\\(\\quad \\quad ax + by = c \\)<br \/>\u5176\u5be6\u4fc2\u4e00\u689d\u76f4\u7dda\u569f\u5605\u3002<\/p><p>\u800c\u5c0d\u4e00\u7d44\u300c\u806f\u7acb\u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b\u300d\u569f\u8b1b\uff0c\u7576\u4e2d\u5c31\u6709\u5169\u689d\u76f4\u7dda\u3002\u6bcf\u689d\u76f4\u7dda\u4e0a\u5605\u9ede\u90fd\u4fc2\u7b26\u5408\u8a72\u689d\u76f4\u7dda\u7684\u65b9\u7a0b\u3002\u800c\u65e2\u7136\u300c\u806f\u7acb\u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b\u300d\u5605\u89e3\u4fc2\u8981\u627e\u5230\u540c\u6642\u7b26\u5408\u5169\u689d\u65b9\u7a0b\u5605\u503c\uff0c\u6240\u4ee5\u5f9e\u5716\u50cf\u4e0a\u4f86\u8aaa\uff0c\u5169\u7dda\u7684\u76f8\u4ea4\u9ede(Intersection)\u4fbf\u662f\u806f\u7acb\u65b9\u7a0b\u7684\u89e3\u3002<\/p><p>\u4f8b4\uff1a<br \/>\u89e3\u4ee5\u4e0b\u806f\u7acb\u65b9\u7a0b<br \/>\\(\\quad \\quad \\left\\{\\begin{matrix}<br \/>&amp; x &#8211; y &#8211; 2= 0 \\quad &amp;&amp; &#8212;&#8212; (1)\\\\<br \/>&amp; x + y = 4 \\quad &amp;&amp; &#8212;&#8212; (2)<br \/>\\end{matrix}\\right.\\)<\/p><p>\u89e3\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6211\u5730\u5148\u756b\u51fa\u5169\u689d\u76f4\u7dda\u3002<\/p><ul><li>x &#8211; y &#8211; 2 = 0<\/li><\/ul><table class=\"resetAsStdTable\" style=\"width: 208px !important;\" width=\"208\"><tbody><tr><td width=\"52\">x<\/td><td width=\"52\">-2<\/td><td width=\"52\">0<\/td><td width=\"52\">2<\/td><\/tr><tr><td width=\"52\">y<\/td><td width=\"52\">&#8211; 4<\/td><td width=\"52\">-2<\/td><td width=\"52\">0<\/td><\/tr><\/tbody><\/table><ul><li>x + y = 4<\/li><\/ul><table style=\"width: 208px !important;\" width=\"208\"><tbody><tr><td width=\"52\">x<\/td><td width=\"52\">0<\/td><td width=\"52\">2<\/td><td width=\"52\">4<\/td><\/tr><tr><td width=\"52\">y<\/td><td width=\"52\">4<\/td><td width=\"52\">2<\/td><td width=\"52\">0<\/td><\/tr><\/tbody><\/table><p style=\"padding-left: 80px;\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-1391\" src=\"https:\/\/www.study-together.com\/edu\/wp-content\/uploads\/2020\/07\/f1maths_simEqn.jpg\" alt=\"\u806f\u7acb\u65b9\u7a0b\u5716\u89e3\u6cd5\" width=\"248\" height=\"312\" srcset=\"https:\/\/www.study-together.com\/edu\/wp-content\/uploads\/2020\/07\/f1maths_simEqn.jpg 248w, https:\/\/www.study-together.com\/edu\/wp-content\/uploads\/2020\/07\/f1maths_simEqn-238x300.jpg 238w\" sizes=\"(max-width: 248px) 100vw, 248px\" \/><\/p><p>\u8a72\u5169\u689d\u76f4\u7dda\u7684\u4ea4\u9ede\u7684\u5750\u6a19\u662f (3, 1)\u3002<\/p><p>\u5f9e\u5716\u50cf\u53ef\u77e5\u7684\u806f\u7acb\u65b9\u7a0b\u7684\u89e3\u662f x = 3\u53cay = 1\u3002<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-76ae461 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"76ae461\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-a783900\" data-id=\"a783900\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9ce36c5 elementor-widget elementor-widget-text-editor\" data-id=\"9ce36c5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form2_maths\/formulae\/\"><i class=\"far fa-arrow-alt-circle-left\" aria-hidden=\"true\"><\/i> \u516c\u5f0f<\/a>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-8e950c7\" data-id=\"8e950c7\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-35b4476\" data-id=\"35b4476\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-86cff79 elementor-widget elementor-widget-text-editor\" data-id=\"86cff79\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: right;\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form2_maths\/rate-and-ratio\/\">\u7387\u53ca\u6bd4 <i class=\"far fa-arrow-alt-circle-right\" aria-hidden=\"true\"><\/i><\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-a16d88f\" data-id=\"a16d88f\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-07c618f elementor-widget elementor-widget-sidebar\" data-id=\"07c618f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"sidebar.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"sidebar-box widget-oceanwp-custom-menu custom-menu-widget clr\"><style type=\"text\/css\">.ocean_custom_menu-3 > ul > li > a, .custom-menu-widget .ocean_custom_menu-3 .dropdown-menu .sub-menu li a.menu-link{font-size:16px;line-height:17px;}.custom-menu-widget .ocean_custom_menu-3.oceanwp-custom-menu > ul.click-menu .open-this{font-size:16px;}<\/style><h4 class=\"widget-title\">\u4e2d\u4e8c\u6578\u5b78\u3010\u76ee\u9304\u3011<\/h4><div class=\"oceanwp-custom-menu clr ocean_custom_menu-3 left dropdown-hover\"><ul id=\"menu-form2mathstopics\" class=\"dropdown-menu sf-menu\"><li  id=\"menu-item-1248\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1248\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form2_maths\/approximation-errors\/\" class=\"menu-link\">1. \u8fd1\u4f3c\u8207\u8aa4\u5dee (Approximation &#038; Errors)<\/a><\/li>\n<li  id=\"menu-item-1261\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1261\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form2_maths\/identities\/\" class=\"menu-link\">2. \u6046\u7b49\u5f0f (Identities)<\/a><\/li>\n<li  id=\"menu-item-1266\" class=\"menu-item 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href=\"https:\/\/www.study-together.com\/edu\/secondary\/form2_maths\/rate-and-ratio\/\" class=\"menu-link\">6. \u7387\u53ca\u6bd4 (Rate and Ratio)<\/a><\/li>\n<li  id=\"menu-item-1280\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1280\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form2_maths\/use-of-percentage\/\" class=\"menu-link\">7. \u767e\u4efd\u6cd5 (Use of Percentage)<\/a><\/li>\n<li  id=\"menu-item-1302\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1302\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form2_maths\/geometry\/\" class=\"menu-link\">8. \u5e7e\u4f55\u5b9a\u7406 (Geometry)<\/a><\/li>\n<li  id=\"menu-item-1303\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1303\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form2_maths\/pythagoras-theorem\/\" class=\"menu-link\">9. \u7562\u6c0f\u5b9a\u7406 (Pythagoras\u2019 Theorem)<\/a><\/li>\n<li  id=\"menu-item-1304\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1304\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form2_maths\/trigonometric-ratios\/\" class=\"menu-link\">10. \u4e09\u89d2\u6bd4 (Trigonometric Ratios)<\/a><\/li>\n<li  id=\"menu-item-1305\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1305\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form2_maths\/areas-and-volumes\/\" class=\"menu-link\">11. \u9762\u7a4d\u548c\u9ad4\u7a4d (Areas and Volumes)<\/a><\/li>\n<li  id=\"menu-item-1306\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1306\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form2_maths\/statistics\/\" class=\"menu-link\">12. \u7d71\u8a08 (Statistics)<\/a><\/li>\n<li  id=\"menu-item-16137\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-16137\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/exam_papers\/\" class=\"menu-link\">*** \u521d\u4e2d\u8a66\u5377 \/ \u8a66\u984c\u5eab ***<\/a><\/li>\n<\/ul><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>\u8981\u4e86\u89e3\u54a9\u4fc2\u806f\u7acb\u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b\uff0c\u5176\u5be6\u53ef\u4ee5\u5f9e\u500b\u540d\u958b\u59cb\u3002 \u300c\u5143\u300d\u4fc2\u6307\u8b8a\u6578\uff0c\u800c\u4e8c\u5143\u65b9\u7a0b\u4fc2\u6307\u65b9\u7a0b\u4e2d\u6709\u5169\u500b\u8b8a\u6578\u51fa\u73fe\u3002 \u300c\u4e00\u6b21 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1238,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"0","ocean_second_sidebar":"0","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"0","ocean_custom_header_template":"0","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"0","ocean_menu_typo_font_family":"0","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"0","footnotes":""},"class_list":["post-1264","page","type-page","status-publish","hentry","entry"],"yoast_head":"<!-- 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