{"id":4725,"date":"2022-01-29T12:42:19","date_gmt":"2022-01-29T04:42:21","guid":{"rendered":"https:\/\/www.study-together.com\/edu\/dse-maths-core\/fundamental_algebra\/2-%e5%87%bd%e6%95%b8%e5%8f%8a%e5%85%b6%e5%9c%96%e5%83%8f-%e7%9b%b4%e8%a7%80%e6%a6%82%e5%bf%b5\/"},"modified":"2025-04-09T14:02:20","modified_gmt":"2025-04-09T06:02:20","slug":"intutive_concepts_of_functions","status":"publish","type":"page","link":"https:\/\/www.study-together.com\/edu\/dse-maths-core\/fundamental_algebra\/function_and_graph\/intutive_concepts_of_functions\/","title":{"rendered":"\u51fd\u6578\u7684\u76f4\u89c0\u6982\u5ff5"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"4725\" class=\"elementor elementor-4725\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6e6d9785 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6e6d9785\" 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-41dc1ba6\" data-id=\"41dc1ba6\" 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-f85ef80 elementor-widget elementor-widget-text-editor\" data-id=\"f85ef80\" 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>\u00a7 \u6578\u5b78\u6210\u7e3e\u5514\u597d\u5605\u540c\u5b78\u4e00\u822c\u90fd\u6bd4\u8f03\u9a5a\u51fd\u6578 \uff0c\u539f\u56e0\u591a\u4fc2\u56e0\u70ba\u51fd\u6578\u5605\u984c\u76ee\u5165\u9762\u7b26\u865f\u6bd4\u8f03\u591a\uff08\u4f8b\u5982f(x)\u3001g(x)\u7b49\uff09\u3002\u5176\u5be6\u53ea\u8981\u638c\u63e1\u597d \u51fd\u6578\u7684\u76f4\u89c0\u6982\u5ff5 (\u5373\u5f9e\u4f8b\u984c\u4e2d\u53bb\u5b78\u4e00D\u77e5\u8b58\u3001\u800c\u5514\u4fc2\u53c8\u6578\u5b78\u5b9a\u7fa9\u5605\u89d2\u5ea6\u569f\u5b78)\uff0c\u51fd\u6578\u90fd\u5514\u4fc2\u592a\u96e3\u660e\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-a8d5991 elementor-widget elementor-widget-text-editor\" data-id=\"a8d5991\" 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>2.1 \u51fd\u6578\u7684\u76f4\u89c0\u6982\u5ff5 &#8211; \u8a8d\u8b58\u51fd\u6578\u3001\u5b9a\u7fa9\u57df\u3001\u4e0a\u57df\u3001\u81ea\u8b8a\u91cf\u53ca\u61c9\u8b8a\u91cf\u7684 \u76f4\u89c0\u6982\u5ff5\u00a0 (Recognise the Intutive Concepts of Functions, Domains and Co-domains, Independent and Dependent Varaibles)<\/h2><h3>2.1.1\u00a0 \u00a0 \u51fd\u6578\u7684\u76f4\u89c0\u6982\u5ff5 (\u51fd\u6578\u662f\u4ec0\u9ebc\uff1f)<\/h3><ul><li>\u51fd\u6578\u53ef\u4ee5\u8a71\u53ea\u4fc2\u4e00\u7a2e\u8a18\u865f\uff0c\u7528\u569f\u4ee3\u8868\u4e00\u689d\u6578\u5f0f\u3002<\/li><li>\u4f8b\u5982\u6709\u689d\u6578\u5f0f\u30003x<sup>2 <\/sup>+ 5x \u2013 1<ul><li>\u6211\u54cb\u53ef\u4ee5\u7528\u4e00\u51fd\u6578 f(x) \u4ee3\u8868\u4f62\uff0c\u5373\uff1a f(x) = 3x<sup>2 <\/sup>+ 5x \u2013 1<\/li><\/ul><\/li><\/ul>\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-9839d95 elementor-widget elementor-widget-accordion\" data-id=\"9839d95\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1591\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-1591\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">f(x)\u00a0\u7684\u89e3\u8aaa\uff1a<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1591\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-1591\"><ul><li>f(x)\u4e2d\u5605&#8221;f&#8221;\u5176\u5be6\u4fc2\u7531\u51fd\u6578\u5605\u82f1\u6587\u201cfunction\u201d\u5ea6\u569f\u5605\u3002<ul><li>\u4f60\u53ef\u4ee5\u7576 f \u4fc2 \u6578\u5f0fx<sup>2 <\/sup>+ 5x \u2013 1 \u5605\u4ee3\u865f\/\u540d\u3002<\/li><\/ul><\/li><li>f(x)\u4e2d\u62ec\u865f\u5165\u9762\u5605x\u4fc2\u8a71\u4ffe\u6211\u54cb\u77e5\u6578\u5f0f\u5165\u9762\u5605\u8b8a\u6578\u4fc2x<ul><li>\u5373\u5176\u4ed6\u4fc2\u6578\u5b57<\/li><\/ul><\/li><\/ul><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1592\" class=\"elementor-tab-title\" data-tab=\"2\" role=\"button\" aria-controls=\"elementor-tab-content-1592\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">g(x)\u3001h(\u03b8)\u00a0\u7684\u89e3\u8aaa<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1592\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"region\" aria-labelledby=\"elementor-tab-title-1592\"><ul><li>\u7576\u4e00\u500b\u51fd\u6578\u53ef\u4ee5\u7528 f(x) \u569f\u4ee3\u8868\u5605\u6642\u5019\u3002\u5481\u7b2c\u4e8c\u500b\u3001\u7b2c\u4e8c\u500b\u5605\u51fd\u6578\u53c8\u53ef\u4ee5\u9ede\u53eb\u5462?<ul><li>\u7c21\u7c21\u55ae\u55ae\u54aa\u7528\u5176\u4ed6\u82f1\u6587\u5b57\u6bcd\u569f\u4ee3\u8868\u500b\u51fd\u6578\u56c9!<ul><li>\u901a\u5e38\u6703\u7528f\u5f8c\u9762\u5605g\u3001h\u7b49\u3002<\/li><\/ul><\/li><\/ul><\/li><li>\u540c\u4e00\u9053\u7406\uff0c\u7576\u8b8a\u6578\u5514\u4fc2\u53ebx\u800c\u4fc2\u53eb \u03b8\uff0c\u6211\u5730\u53ea\u8981\u5c07\u8b8a\u6578\u7b26\u865f\u5beb\u55ba\u62ec\u865f\u5165\u9762\u5c31\u53ef\u4ee5\u4e86\u3002<\/li><li>\u6240\u4ee5\u5927\u5bb6\u6709\u6642\u6703\u898b\u5230 g(x), h(\u03b8)\u7b49\u5605\u51fa\u73fe\u56c9\uff01<\/li><\/ul><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f5d0f49 elementor-widget elementor-widget-text-editor\" data-id=\"f5d0f49\" 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>\u660e\u767d\u51fd\u6578\u5605\u8a18\u6cd5\u4e4b\u5f8c\uff0c\u518d\u7747\u8fd4\u4e0b\u9762\u5605\u51fd\u6578\u5c31\u54aa\u89ba\u5f97\u5bb9\u6613\u7406\u89e3\u597d\u591a\u5462?<\/p><ul><li>\\(g(x)=\\dfrac{x+1}{2x-3}\\)<ul><li>g(x) \u53ea\u4fc2\u4e00\u500b\u4ee3\u865f\uff0c\u4ee3\u8868\u7b49\u865f\u53f3\u908a\u5605\u6578\u5f0f\u3002<\/li><\/ul><\/li><li>\\(f(\\theta)=2sin(90^{\\circ}-\\theta)\\)<ul><li>\\(f(\\theta)\\)\u4ea6\u90fd\u53ea\u4fc2\u4e00\u500b\u4ee3\u865f\uff0c\u4ee3\u8868\u7b49\u865f\u53f3\u908a\u5605\u6578\u5f0f\u3002<\/li><\/ul><\/li><\/ul>\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-e7f217c elementor-widget elementor-widget-accordion\" data-id=\"e7f217c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-2431\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-2431\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">\u61c9\u7528\u4f8b\u5b50\uff1a  \u6c7d\u6c34\u6bcf\u679d$6\u3002\u5c0f\u660e\u7528\u5497y\u5481\u591a\u9322\u569f\u8cb7x\u679d\u6c7d\u6c34\u3002<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-2431\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-2431\"><ul><li>\u5982\u679c\u6211\u54cb\u7528\u516c\u5f0f\u5605\u8b1b\u6cd5\uff0c\u6211\u54cb\u53ef\u4ee5\u8a71\uff1a<ul><li>y = 6x<\/li><\/ul><\/li><li>\u7528\u51fd\u6578\u5605\u8b1b\u6cd5\uff0c\u6211\u54cb\u6703\u8a71\uff1a<ul><li>y = f(x)\uff1b\u00a0 \u800c f(x) = 6x<\/li><\/ul><\/li><\/ul><p>\u4f60\u53ef\u80fd\u6703\u89ba\u5f97\u7528\u516c\u5f0f\u5605\u5beb\u6cd5\u54aa\u5e7e\u597d\uff0c\u7c21\u7c21\u55ae\u55ae\u3002<\/p><ul><li>\u4f46\u5176\u5be6\u51fd\u6578\u5605\u597d\u8655\u4fc2\u65b9\u4fbf\u8868\u9054\uff08\u5514\u99db\u6b21\u6b21\u90fd\u5beb\u689d\u6578\u5f0f\uff09\u3002<\/li><li>\u53e6\u5916\u6211\u54cb\u4ea6\u53ef\u4ee5\u7576f(x)\u4fc2\u4e00\u500b\u96fb\u8166\u7a0b\u5f0f\uff0c\u6211\u54cb\u53ea\u8981\u4ffe\u500bx\u5605\u503c\u4f62\uff0c\u4f62\u5c31\u6703\u5e6b\u6211\u54cb\u8a08\u500b\u7b54\u6848\u51fa\u569f\u3002\uff08\u7576\u7136\u55ba\u8003\u8a66\u7576\u4e2d\uff0c\u6211\u54cb\u8981\u7528\u4eba\u624b\u8a08\u3002\uff09<\/li><\/ul><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2edffe3 elementor-widget elementor-widget-text-editor\" data-id=\"2edffe3\" 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<h3>2.1.2 \u5b9a\u7fa9\u57df\u3001\u4e0a\u57df\u548c\u503c\u57df<\/h3>\n<p>\u8981\u8b1b\u89e3\u54a9\u4fc2\u201c\u5b9a\u7fa9\u57df\u3001\u4e0a\u57df\u548c\u503c\u57df\u201d\uff0c\u6700\u597d\u5c31\u4fc2\u7528\u4f8b\u5b50\u3002<\/p>\n<ul>\n<li>\u7528\u8fd4\u524d\u9762\u5c0f\u660e\u8cb7\u6c7d\u6c34\u5605\u4f8b\u5b50\uff1a\n<ul>\n<li>\u6c7d\u6c34\u6bcf\u679d$6\u3002<\/li>\n<li>\u8a2d\u5c0f\u660e\u8cb7\u5497x\u5481\u591a\u679d\u6c7d\u6c34\u3002<\/li>\n<li>\u5c0f\u660e\u7528\u569f\u8cb7\u6c7d\u6c34\u5605\u9322\u53ef\u4ee5\u88ab\u5b9a\u7fa9\u70ba\u4e00\u500b\u51fd\u6578 f\u3002\n<ul>\n<li>\u56e0\u6b64\u3000f(x) = 6x<\/li><\/ul><\/li><\/ul><\/li><\/ul>\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-22114ec elementor-widget elementor-widget-accordion\" data-id=\"22114ec\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-3571\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-3571\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">\u5b9a\u7fa9\u57df\uff08Domain\uff09\u4fc2\u6307\u8b8a\u6578x\u5605\u6240\u6709\u53ef\u80fd\u503c<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-3571\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-3571\"><ul><li>\u55ba\u8cb7\u6c7d\u6c34\u5605\u4f8b\u5b50\u5165\u9762\uff0c\u51fd\u6578f(x)\u7684\u5b9a\u7fa9\u57df\u4fc2\u201c\u5927\u904e\u6216\u7b49\u65bc0\u7684\u6574\u6578\u201d\uff0c\u5373 \\(x \\geqslant 0\\)\u3002<ul><li>\u9ede\u89e3\uff1f\u4f60\u8ad7\u5413\u5c0f\u660e\u53ef\u5514\u53ef\u4ee5\u8cb7\u5230 \u20132\u6216\u80055\u679d\u6c7d\u6c34\uff1f<\/li><\/ul><\/li><\/ul><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-3572\" class=\"elementor-tab-title\" data-tab=\"2\" role=\"button\" aria-controls=\"elementor-tab-content-3572\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">\u4e0a\u57df\uff08Co-domain\uff09\u4fc2\u6307\u51fd\u6578f(x)\u5605\u6240\u6709\u53ef\u80fd\u503c<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-3572\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"region\" aria-labelledby=\"elementor-tab-title-3572\"><ul><li>\u56e0\u70ba\u8ab2\u7a0b\u4e2d\u53ea\u8981\u6c42\u5927\u5bb6\u8a8d&#8221;\u76f4\u89c0\u6982\u5ff5&#8221;\uff0c\u6240\u4ee5\u5514\u6703\u8b1b\u4e0a\u57df\u5605\u5b9a\u7fa9\u3002<\/li><li>\u00a0\u7c21\u55ae\u569f\u8b1b\uff0c\u4e0a\u57df\u4fc2\u6307&#8221;\u51fd\u6578\u53ef\u80fd\u7684\u503c\u201c\u3002<ul><li>\u55ba\u8cb7\u6c7d\u6c34\u5605\u4f8b\u5b50\u5165\u9762\uff0c\u56e0\u70bax\u4fc2\u5927\u904e\u6216\u7b49\u65bc0\u3002<\/li><li>\u6240\u4ee5 6x \u4ea6\u5fc5\u5927\u904e\u6216\u7b49\u65bc0\u3002<br \/><ul><li>\u56e0\u6b64\uff0c\u51fd\u6578f\u7684\u4e0a\u57df\u53ef\u4ee5\u4fc2\u201c\u5927\u904e\u6216\u7b49\u65bc0\u7684\u6574\u6578\u201d\u3002<\/li><\/ul><\/li><\/ul><\/li><\/ul><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-3573\" class=\"elementor-tab-title\" data-tab=\"3\" role=\"button\" aria-controls=\"elementor-tab-content-3573\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">\u503c\u57df\uff08Range\uff09<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-3573\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"3\" role=\"region\" aria-labelledby=\"elementor-tab-title-3573\"><ul><li>\u503c\u57df\uff08Range\uff09\u55ba\u4e2d\u5b78\u6587\u6191\u5605\u8ab2\u7a0b\u6307\u5f15\u5165\u9762\u4fc2\u5187\u63d0\u904e\u5605\u3002<ul><li>\u4e0d\u904e\u4e00\u822c\u569f\u8b1b\uff0c\u7576\u4e2d\u5605\u5206\u5225\u5c0d\u540c\u5b78\u569f\u8b1b\u610f\u601d\u4e0d\u5927\u3002<\/li><\/ul><\/li><li>\u5982\u679c\u60f3\u77e5\uff0c \u503c\u57df\u4fc2\u201c\u5c07\u6240\u6709x\u7684\u53ef\u80fd\u503c\u4ee3\u5165\u51fd\u6578f\u5f8c\u6240\u5c0d\u61c9\u7684\u503c\u201d\u3002<ul><li>\u55ba\u8cb7\u6c7d\u6c34\u5605\u4f8b\u5b50\u5165\u9762\uff0cx = 0, 1, 2, 3&#8230;<\/li><li>\u6240\u4ee5\uff0c\u51fd\u6578f\u7684\u76f8\u61c9\u503c\u4fc2\u201c0, 6, 12, 18, 24, \u2026.\u201d<ul><li>\u6240\u4ee5\u51fd\u6578f\u7684\u503c\u57df\u4fc2\u201c0\u62166\u7684\u500d\u6578\u201d\u3002<\/li><\/ul><\/li><\/ul><\/li><\/ul><p>\u00a0<\/p><p>\u7531\u4ee5\u4e0a\u5605\u89e3\u91cb\uff0c\u5927\u5bb6\u53ef\u4ee5\u5c07\u201c\u4e0a\u57df\u201d\u7747\u6210\u70ba\u4e00\u500b\u201c\u6bd4\u8f03\u7c97\u7565\u5605\u8b1b\u6cd5\u201d\uff1b\u800c\u201c\u503c\u57df\u201d\u5c31\u597d\u5be6\u5728\u5481\u8b1b\u5230\u660e\u201c\u7d93\u904e\u500b\u51fd\u6578\u904b\u7b97\u4e4b\u5f8c\u5605\u503c\u53ef\u4ee5\u4fc2\u54a9\u201d\u3002<\/p><ul><li>\u55ba\u8cb7\u6c7d\u6c34\u5605\u4f8b\u5b50\u5165\u9762\uff0c\u6211\u54cb\u4ea6\u53ef\u4ee5\u8a71\u201c\u4e0a\u57df\u201d\u4fc2\u201c0\u6216\u8005\u96d9\u6578\u201d\u3002<\/li><li>\u597d\u591a\u6642\u5019\uff0c\u201c\u4e0a\u57df\u201d\u540c\u201c\u503c\u57df\u201d\u6839\u672c\u5c31\u6703\u4fc2\u4e00\u6a23\u3002<\/li><\/ul><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-98ebc9d elementor-widget elementor-widget-text-editor\" data-id=\"98ebc9d\" 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>\u5514\u77e5\u5927\u5bb6\u7747\u5230\u4f9d\u5ea6\u5230\u5e95\u660e\u5514\u660e\u54a9\u4fc2\u201c\u5b9a\u7fa9\u57df\u201d\u540c\u201c\u4e0a\u57df\u201d\u3002<\/p><ul><li>\u5176\u5be6\u51fd\u6578\u53ef\u4ee5\u5b78\u5230\u597d\u6df1\u2026\u2026\u4e0d\u904e\u6211\u8ad7\u55ba\u4e2d\u5b78\u6587\u6191\u5ea6\u8003\u8a55\u5c40\u90fd\u4fc2\u60f3\u5927\u5bb6\u5c0d\u6709\u500b\u201c\u7c97\u7565\u201d\u8a8d\u8b58\u3002\u6240\u4ee5\u5982\u679c\u4f60\u7747\u5514\u660e\u4e0a\u9762\u5605\u89e3\u91cb\uff0c\u4f60\u53ef\u4ee5\u7576\uff1a<ul><li>\u5b9a\u7fa9\u57df =\u00a0 x\u5605\u6240\u6709\u53ef\u80fd\u503c<\/li><li>\u4e0a\u57df = f(x)\u5605\u6240\u6709\u53ef\u80fd\u503c<\/li><\/ul><\/li><\/ul>\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-ee4647b elementor-widget elementor-widget-text-editor\" data-id=\"ee4647b\" 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<h3>2.1.3 \u81ea\u8b8a\u91cf\u53ca\u61c9\u8b8a\u91cf<\/h3><ul><li>\u53c8\u7528\u591a\u6b21\u524d\u9762\u5c0f\u660e\u8cb7\u6c7d\u6c34\u5605\u4f8b\u5b50\uff1a<ul><li>\u6c7d\u6c34\u6bcf\u679d$6\u3002<\/li><li>\u8a2d\u5c0f\u660e\u8cb7\u5497x\u5481\u591a\u679d\u6c7d\u6c34\u3002<\/li><li>\u5c0f\u660e\u7528\u569f\u8cb7\u6c7d\u6c34\u5605\u9322\u53ef\u4ee5\u88ab\u5b9a\u7fa9\u70ba\u4e00\u500b\u51fd\u6578 f\u3002<ul><li>\u56e0\u6b64\u3000f(x) = 6x<\/li><\/ul><\/li><li>\u5982\u679c\u8a2d\u5c0f\u660e\u7528\u5497y\u5481\u591a\u9322\uff0c\u5481\u3000y = f(x) \uff08\u6216 y = 6x\uff09<br \/><br \/><\/li><\/ul><\/li><li>\u201c\u81ea\u8b8a\u91cf\u201d\u4fc2\u201c\u53ef\u4ee5\u81ea\u5df1\u6539\u8b8a\u5605\u8b8a\u91cf\u201d<ul><li>\u6240\u4ee5\u201c\u8cb7\u6c7d\u6c34\u5605\u6578\u91cf\u201d\uff08x\uff09 \u5c31\u4fc2\u81ea\u8b8a\u91cf\u3002<\/li><\/ul><\/li><li>\u00a0\u201c\u61c9\u8b8a\u91cf\u201d\u4fc2\u201c\u56e0\u61c9\u5176\u4ed6\u8b8a\u91cf\u6539\u8b8a\u4fbf\u800c\u6539\u8b8a\u5605\u8b8a\u91cf\u201d<ul><li>\u6240\u4ee5\u201c\u8cb7\u6c7d\u6c34\u6240\u7528\u5497\u5605\u9322\u201d\uff08y\uff09 \u5c31\u4fc2\u61c9\u8b8a\u91cf\u3002<br \/><br \/><\/li><\/ul><\/li><\/ul>\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-332e54b4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"332e54b4\" 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-181cbc7b\" data-id=\"181cbc7b\" 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-5673dee5 elementor-widget elementor-widget-text-editor\" data-id=\"5673dee5\" 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><i class=\"far fa-arrow-alt-circle-left\" aria-hidden=\"true\"><\/i>\u00a0<a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/fundamental_algebra\/quadratic_eqn-complex_number_arithematic\/\">\u8907\u6578\u7684\u56db\u5247\u904b\u7b97<\/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<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-3d104953\" data-id=\"3d104953\" 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-7ccfedd6\" data-id=\"7ccfedd6\" 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-514f5aac elementor-widget elementor-widget-text-editor\" data-id=\"514f5aac\" 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\/dse-maths-core\/fundamental_algebra\/function_and_graph\/function_notation_and_representation\/\">\u51fd\u6578\u8a18\u6cd5\u53ca\u8868\u9039\u65b9\u6cd5<\/a>\u00a0<i class=\"far fa-arrow-alt-circle-right\" aria-hidden=\"true\"><\/i><\/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-4bfd21bc\" data-id=\"4bfd21bc\" 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-20775dbc elementor-widget elementor-widget-sidebar\" data-id=\"20775dbc\" 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 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