{"id":229,"date":"2023-07-10T21:19:16","date_gmt":"2023-07-10T21:19:16","guid":{"rendered":"https:\/\/mathority.org\/cn\/%e7%9b%b8%e4%ba%a4%e7%ba%bf%e7%a4%ba%e4%be%8b\/"},"modified":"2023-07-10T21:19:16","modified_gmt":"2023-07-10T21:19:16","slug":"%e7%9b%b8%e4%ba%a4%e7%ba%bf%e7%a4%ba%e4%be%8b","status":"publish","type":"post","link":"https:\/\/mathority.org\/cn\/%e7%9b%b8%e4%ba%a4%e7%ba%bf%e7%a4%ba%e4%be%8b\/","title":{"rendered":"\u76f8\u4ea4\u7ebf"},"content":{"rendered":"<p>\u5728\u6b64\u9875\u9762\u4e0a\uff0c\u60a8\u5c06\u627e\u5230\u6709\u5173\u5272\u7ebf\u7684\u6240\u6709\u5185\u5bb9\uff1a\u5b83\u4eec\u7684\u542b\u4e49\u3001\u5b58\u5728\u7684\u4e0d\u540c\u7c7b\u578b\u3001\u5982\u4f55\u77e5\u9053\u4e24\u6761\u7ebf\u662f\u5426\u5272\u7ebf\u3001\u5982\u4f55\u627e\u5230\u5b83\u4eec\u7684\u516c\u5171\u70b9\u2026\u2026\u60a8\u8fd8\u53ef\u4ee5\u770b\u5230\u51e0\u4e2a\u793a\u4f8b\u548c\u5df2\u89e3\u51b3\u7684\u7ec3\u4e60\u7684\u5272\u7ebf\u3002 <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%c2%bfque-son-dos-rectas-secantes\"><\/span>\u4ec0\u4e48\u662f\u4e24\u6761\u76f8\u4ea4\u7ebf\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5728\u6570\u5b66\u4e2d\uff0c\u5272\u7ebf\u7684\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n<p><strong>\u5f53\u4e24\u6761\u7ebf\u4ec5\u76f8\u4ea4\u4e8e\u4e00\u70b9\u65f6\uff0c\u5b83\u4eec\u5c31\u76f8\u4ea4\u3002<\/strong>\u56e0\u6b64\uff0c\u76f8\u4ea4\u7ebf\u53ea\u6709\u4e00\u4e2a\u516c\u5171\u70b9\u3002\u6b64\u5916\uff0c\u4e24\u6761\u76f8\u4ea4\u7ebf\u5fc5\u987b\u5305\u542b\u5728\u540c\u4e00\u7b1b\u5361\u5c14\u5e73\u9762\u4e2d\u3002<\/p>\n<p>\u4e24\u6761\u7ebf\u76f8\u4ea4\u4e8e\u4e00\u70b9\u7684\u6982\u5ff5\u5f88\u91cd\u8981\uff0c\u56e0\u4e3a\u5982\u679c\u5b83\u4eec\u6709\u591a\u4e2a\u4ea4\u70b9\uff0c\u5b83\u4eec\u5c06\u662f\u91cd\u5408\u7ebf\uff0c\u53e6\u4e00\u65b9\u9762\uff0c\u5982\u679c\u5b83\u4eec\u6ca1\u6709\u4ea4\u70b9\uff0c\u5b83\u4eec\u5c06\u662f\u5e73\u884c\u7ebf\u3002 <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ejemplos-de-rectas-secantes\"><\/span>\u76f8\u4ea4\u7ebf\u7684\u793a\u4f8b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u4e86\u89e3\u4e86\u4e24\u6761\u76f8\u4ea4\u7ebf\u7684\u542b\u4e49\u540e\uff0c\u73b0\u5728\u8ba9\u6211\u4eec\u770b\u4e00\u4e0b\u6b64\u7c7b\u7ebf\u7684\u4e24\u4e2a\u4e0d\u540c\u793a\u4f8b\uff1a <\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-129\">\n<div class=\"wp-block-column is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/exemples-de-lignes-secantes.webp\" alt=\"\u76f8\u4ea4\u7ebf\u7684\u793a\u4f8b\" class=\"wp-image-4275\" width=\"214\" height=\"218\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<div class=\"wp-block-column is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/secantes-exemple.webp\" alt=\"\u5272\u7ebf\u793a\u4f8b\" class=\"wp-image-4276\" width=\"205\" height=\"193\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<\/div>\n<p>\u6b63\u5982\u60a8\u6240\u770b\u5230\u7684\uff0c\u76f4\u7ebf<em>r<\/em>\u548c<em>s<\/em>\u76f8\u4ea4\uff0c\u56e0\u4e3a\u5b83\u4eec\u5728\u4e00\u70b9\u76f8\u4ea4\u3002\u5e76\u4e14\uff0c\u4ee5\u540c\u6837\u7684\u65b9\u5f0f\uff0c\u7ebf<em>t<\/em>\u4e0e\u7ebf<em>u<\/em>\u76f8\u4ea4\uff0c\u56e0\u4e3a\u5b83\u4eec\u5b58\u5728\u4e00\u4e2a\u76f8\u4ea4\u70b9\u3002<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"tipos-de-rectas-secantes\"><\/span> \u76f8\u4ea4\u7ebf\u7684\u7c7b\u578b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u76f8\u4ea4\u7ebf\u6709\u4e24\u79cd\u7c7b\u578b\uff1a<\/p>\n<ul>\n<li><strong>\u5782\u76f4\u7ebf<\/strong>\uff1a\u4ee5 90\u00b0 \u76f4\u89d2\u76f8\u4ea4\u7684\u7ebf\u3002<\/li>\n<li><strong>\u659c\u7ebf\uff1a<\/strong>\u7531\u4ee5 0\u00b0 \u5230 90\u00b0 \u4e4b\u95f4\u7684\u9510\u89d2\u76f8\u4ea4\u7684\u7ebf\u7ec4\u6210\uff08\u4e0d\u5305\u62ec\u5728\u5185\uff09\u3002 <\/li>\n<\/ul>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"rectas-perpendiculares\"><\/span>\u5782\u76f4\u76f4\u7ebf<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/lignes-perpendiculaires-a-90-degres.webp\" alt=\"\u5782\u76f4\u76f8\u4ea4\u7ebf\" class=\"wp-image-1884\" width=\"183\" height=\"209\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<p><strong>\u5782\u76f4\u7ebf<\/strong>\u662f\u76f8\u4ea4\u5f62\u6210\u56db\u4e2a 90 \u5ea6\u89d2\u7684\u7ebf\u3002<\/p>\n<p>\u540c\u6837\uff0c\u4e24\u6761\u5782\u76f4\u7ebf\u7684\u659c\u7387\u59cb\u7ec8\u6ee1\u8db3\u4ee5\u4e0b\u6761\u4ef6\uff1a<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-b334a779381b6ab728642af8136b66a9_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m_r = -\\cfrac{1}{m_s}\" title=\"Rendered by QuickLaTeX.com\" height=\"41\" width=\"85\" style=\"vertical-align: -15px;\"><\/p>\n<\/p>\n<p>\u5782\u76f4\u76f8\u4ea4\u7ebf\u7684\u53e6\u4e00\u4e2a\u5c5e\u6027\u662f\u5b83\u4eec\u7684\u65b9\u5411\u5411\u91cf\uff08\u6307\u793a\u7ebf\u65b9\u5411\u7684\u5411\u91cf\uff09\u4e4b\u95f4\u7684\u70b9\u79ef\u7b49\u4e8e\u96f6\u3002<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-4b2db86aa49b4d137058e4e611b75a0a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{\\text{v}}_r \\cdot \\vv{\\text{v}}_s = 0\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"79\" style=\"vertical-align: -3px;\"><\/p>\n<\/p>\n<p>\u5982\u679c\u60a8\u5bf9\u5782\u76f4\u7ebf\u66f4\u611f\u5174\u8da3\uff0c\u5728\u6b64\u94fe\u63a5\u4e2d\u60a8\u53ef\u4ee5\u770b\u5230<a href=\"https:\/\/mathority.org\/cn\/\u5782\u76f4\u7ebf\u7684\u5b9a\u4e49\u548c\u4f8b\u5b50-\u5782\u76f4\u5ea6\/\">\u5782\u76f4\u7ebf\u7684\u793a\u4f8b<\/a>\u3002\u6b64\u5916\uff0c\u60a8\u8fd8\u5c06\u4e86\u89e3\u5982\u4f55\u8ba1\u7b97\u4e0e\u53e6\u4e00\u6761\u7ebf\u5782\u76f4\u7684\u7ebf\u3001\u6b64\u7c7b\u7ebf\u7684\u5c5e\u6027\u3001\u9010\u6b65\u89e3\u51b3\u7684\u7ec3\u4e60\u7b49\u3002<\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"rectas-oblicuas\"><\/span>\u659c\u7ebf<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/angles-droits-secants.webp\" alt=\"\" class=\"wp-image-1644\" width=\"218\" height=\"205\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<p><strong>\u659c\u7ebf<\/strong>\u662f\u6210\u5bf9\u76f8\u4ea4\u5f62\u6210\u9510\u89d2\u548c\u949d\u89d2\u7684\u7ebf\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5f62\u6210\u4e24\u4e2a\u9510\u89d2\uff08\u5c0f\u4e8e90\u00b0\uff09\u548c\u4e24\u4e2a\u949d\u89d2\uff08\u5927\u4e8e90\u00b0\uff09\u3002\u7136\u800c\uff0c\u6839\u636e\u4e24\u6761\u7ebf\u7684\u89d2\u5ea6\u7684\u5b9a\u4e49\uff0c\u4e24\u6761\u7ebf\u4e4b\u95f4\u7684\u89d2\u5ea6\u662f\u5176\u5f62\u6210\u7684\u89d2\u5ea6\u4e2d\u6700\u5c0f\u7684\u3002<\/p>\n<p>\u4e24\u6761\u659c\u7ebf\u4e0e\u5176\u659c\u7387\u4e4b\u95f4\u7684\u89d2\u5ea6\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u516c\u5f0f\u8ba1\u7b97\uff1a <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-82acfc9ae51ee3a469cfabc7024aa75c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\text{tg}(\\alpha) =\\begin{vmatrix} \\cfrac{m_2-m_1}{1+m_1\\cdot m_2} \\end{vmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"44\" width=\"166\" style=\"vertical-align: -17px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%c2%bfcomo-saber-si-dos-rectas-son-secantes\"><\/span>\u5982\u4f55\u77e5\u9053\u4e24\u6761\u7ebf\u662f\u5426\u76f8\u4ea4\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u6c42\u4e24\u6761\u7ebf\u7684\u76f8\u5bf9\u4f4d\u7f6e\u4e3b\u8981\u67093\u79cd\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>\u4e0e\u4e24\u6761\u7ebf\u7684\u65b9\u5411\u5411\u91cf\u3002<\/li>\n<li>\u968f\u7740\u4e24\u6761\u7ebf\u7684\u659c\u7387\u3002<\/li>\n<li>\u5177\u6709\u4e24\u6761\u76f4\u7ebf\u7684\u9690\u5f0f\uff08\u6216\u4e00\u822c\uff09\u65b9\u7a0b\u3002<\/li>\n<\/ul>\n<p>\u7136\u540e\u6211\u4eec\u5c06\u770b\u5230\u5bf9\u5df2\u77e5\u4e24\u6761\u7ebf\u4f55\u65f6\u76f8\u4ea4\u7684 3 \u79cd\u65b9\u6cd5\u7684\u89e3\u91ca\u3002 <\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"a-partir-de-los-vectores-directores-de-las-rectas\"><\/span>\u4ece\u7ebf\u7684\u65b9\u5411\u5411\u91cf<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u5982\u679c\u4e24\u6761\u4e0d\u540c\u76f4\u7ebf\u7684<strong>\u65b9\u5411\u5411\u91cf<\/strong>\uff08\u6807\u8bb0\u76f4\u7ebf\u65b9\u5411\u7684\u5411\u91cf\uff09<strong>\u7684\u5750\u6807\u4e0d\u6210\u6bd4\u4f8b<\/strong>\uff0c\u5219\u8fd9\u4e24\u6761\u76f4\u7ebf\u76f8\u4ea4\u3002<\/p>\n<p>\u8ba9\u6211\u4eec\u770b\u770b\u9010\u6b65\u89e3\u51b3\u4e24\u6761\u76f8\u4ea4\u7ebf\u7684\u7ec3\u4e60\uff1a<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-5d8a2fa136f2840fc1f680e0f7f10ed6_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle r: \\ \\begin{cases} x=1+2t \\\\[2ex] y= 5-3t \\end{cases}\\qquad \\qquad s: \\ \\begin{cases} x=1+t \\\\[2ex] y=2+4t \\end{cases}\" title=\"Rendered by QuickLaTeX.com\" height=\"65\" width=\"341\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p>\u4e24\u6761\u7ebf\u90fd\u8868\u793a\u4e3a\u53c2\u6570\u65b9\u7a0b\uff0c\u56e0\u6b64\u6bcf\u6761\u7ebf\u7684\u65b9\u5411\u5411\u91cf\u7684\u5206\u91cf\u5c31\u662f\u53c2\u6570\u524d\u9762\u7684\u6570\u5b57<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-40f8b062c79839dcf7f2885a9e1469e7_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"t:\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"15\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-47af5d91c1b73436a1d093b726f25fc5_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vv{r} =(2,-3) \\qquad \\qquad \\vv{s}=(1,4)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"227\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p>\u56e0\u6b64\uff0c\u8981\u67e5\u770b\u65b9\u5411\u5411\u91cf\u662f\u5426\u6210\u6bd4\u4f8b\uff0c\u6211\u4eec\u9700\u8981\u5c06\u5b83\u4eec\u7684\u5750\u6807\u5206\u5f00\u3002\u5982\u679c\u4e24\u4e2a\u90e8\u5206\u7684\u7ed3\u679c\u76f8\u540c\uff0c\u5219\u5b83\u4eec\u5c06\u6210\u6bd4\u4f8b\uff1b\u53e6\u4e00\u65b9\u9762\uff0c\u5982\u679c\u7ed3\u679c\u4e0d\u540c\uff0c\u5219\u610f\u5473\u7740\u5411\u91cf\u4e0d\u6210\u6bd4\u4f8b\u3002<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-eec422a81e65b12a2cdccd7f3f046d43_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\cfrac{2}{1} \\neq \\cfrac{-3}{4}\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"65\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p>\u5206\u91cf\u7684\u5212\u5206\u4e0d\u76f8\u7b49\uff0c\u56e0\u6b64\u77e2\u91cf\u4e0d\u6210\u6bd4\u4f8b\uff0c\u56e0\u6b64\u7ebf\u76f8\u4ea4\u3002 <\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"a-partir-de-las-pendientes\"><\/span>\u5728\u659c\u5761\u7684\u8d77\u70b9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u5982\u679c\u4e24\u6761\u7ebf\u5177\u6709<strong>\u4e0d\u540c\u7684\u659c\u7387<\/strong>\uff0c\u5219\u610f\u5473\u7740\u4e24\u6761\u7ebf\u76f8\u4ea4\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4e24\u6761\u7ebf\u76f8\u4ea4\uff0c\u56e0\u4e3a\u5b83\u4eec\u5177\u6709\u4e0d\u540c\u7684\u659c\u7387\uff1a<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ffc969eee2677b9ecad5cf5db53e8f5b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"r: \\ y=-2x+4 \\qquad \\qquad s: \\ y=3x+1\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"307\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p>\u7ebf\u7684\u659c\u7387<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-c409433a9e2dfcdb83360a974d243f18_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"r\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"8\" style=\"vertical-align: 0px;\"><\/p>\n<p>\u4e3a -2 \u4e14\u76f4\u7ebf\u7684\u659c\u7387<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ae1901659f469e6be883797bfd30f4f8_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"s\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"8\" style=\"vertical-align: 0px;\"><\/p>\n<p>\u662f 3\u3002<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f90d75463e776b8be3bde1e06098dd6e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m_r =-2 \\neq m_s =3\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"148\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p>\u7531\u4e8e\u4e24\u6761\u7ebf\u7684\u659c\u7387\u4e0d\u540c\uff0c\u56e0\u6b64\u5b83\u4eec\u76f8\u4ea4\u3002 <\/p>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"a-partir-de-ecuacion-implicita-de-la-recta\"><\/span>\u7531\u76f4\u7ebf\u7684\u9690\u5f0f\u65b9\u7a0b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u8fd8\u53ef\u4ee5\u901a\u8fc7\u76f4\u7ebf\u7684\u9690\u5f0f\u65b9\u7a0b\uff08\u6216\u4e00\u822c\u65b9\u7a0b\uff09\u6c42\u51fa\u4e24\u6761\u76f4\u7ebf\u662f\u5426\u76f8\u4ea4\u3002\u76f4\u7ebf\u7684\u9690\u5f0f\u65b9\u7a0b\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-02f4d03229cc8bd79a81b676a8132f37_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"Ax+By+C=0\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"137\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p>\u56e0\u6b64\uff0c<strong>\u5f53\u4e24\u6761\u7ebf\u7684\u7cfb\u6570 A \u548c B \u4e0d\u6210\u6bd4\u4f8b\u65f6\uff0c\u4e24\u6761\u7ebf\u76f8\u4ea4\u3002<\/strong><\/p>\n<p>\u8ba9\u6211\u4eec\u770b\u4e00\u4e0b\u7528\u9690\u5f0f\u65b9\u7a0b\u5b9a\u4e49\u7684\u4e24\u6761\u76f8\u4ea4\u7ebf\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d44b9676f447f9b6adbee40874e49690_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"r: \\ 3x-y+5=0 \\qquad \\qquad s: \\ -2x+6y-1=0\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"378\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p>\u4e3a\u4e86\u9a8c\u8bc1\u8fd9\u662f\u4e24\u6761\u76f8\u4ea4\u7ebf\uff0c\u6211\u4eec\u5fc5\u987b\u5206\u6790\u7cfb\u6570A\uff08\u53d8\u91cf\u524d\u9762\u7684\u6570\u5b57\uff09\u7684\u6bd4\u4f8b\u5173\u7cfb<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ede05c264bba0eda080918aaa09c4658_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"10\" style=\"vertical-align: 0px;\"><\/p>\n<p>\uff09\u4e0e\u7cfb\u6570B\uff08\u53d8\u91cf\u524d\u9762\u7684\u6570\u5b57<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-0af556714940c351c933bba8cf840796_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"9\" style=\"vertical-align: -4px;\"><\/p>\n<p>\uff09\uff1a<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-b05e5244b2fc745581be03a3aa46a909_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\cfrac{3}{-2} \\neq \\cfrac{-1}{6}\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"79\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p>\u8fd9\u4e24\u9879\u4e0d\u6210\u6bd4\u4f8b\uff0c\u56e0\u6b64\u4e24\u6761\u7ebf\u5b9e\u9645\u4e0a\u76f8\u4ea4\u3002 <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"hallar-el-punto-en-comun-de-dos-rectas-secantes\"><\/span>\u627e\u5230\u4e24\u6761\u76f8\u4ea4\u7ebf\u7684\u516c\u5171\u70b9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u6b63\u5982\u6211\u4eec\u6240\u89c1\uff0c\u76f8\u4ea4\u7ebf\u53ea\u6709\u4e00\u4e2a\u516c\u5171\u70b9\u3002\u56e0\u6b64\uff0c\u8981\u8ba1\u7b97\u4e24\u6761\u5272\u7ebf\u7684\u4ea4\u70b9<strong>\uff0c\u9700\u8981\u6c42\u89e3\u4e24\u6761\u7ebf\u7ec4\u6210\u7684\u65b9\u7a0b\u7ec4\u3002<\/strong><\/p>\n<p>\u4f8b\u5982\uff0c\u6211\u4eec\u5c06\u627e\u5230\u4ee5\u4e0b\u4e24\u6761\u7ebf\u7684\u4ea4\u70b9\uff1a<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-05c8377db50add3d4faf73850cc60a7c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"r: \\ x+2y-5=0 \\qquad \\qquad s: \\ 2x-3y+3=0\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"364\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p>\u4e3a\u4e86\u786e\u5b9a\u4e24\u6761\u7ebf\u7684\u4ea4\u70b9\uff0c\u6211\u4eec\u5fc5\u987b\u6c42\u89e3\u7531\u4e24\u6761\u7ebf\u7ec4\u6210\u7684\u7ebf\u6027\u65b9\u7a0b\u7ec4\uff1a<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-77ae257986963d3652d5996fc09be9fb_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\left.\\begin{array}{l} x+2y-5=0\\\\[2ex] 2x-3y+3=0\\end{array}\\right\\}\" title=\"Rendered by QuickLaTeX.com\" height=\"65\" width=\"143\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p>\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u5c06\u7528\u4ee3\u5165\u6cd5\u6765\u6c42\u89e3\u7cfb\u7edf\u3002\u56e0\u6b64\u6211\u4eec\u5c06\u9694\u79bb\u53d8\u91cf<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ede05c264bba0eda080918aaa09c4658_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"10\" style=\"vertical-align: 0px;\"><\/p>\n<p>\u5c06\u7b2c\u4e00\u4e2a\u65b9\u7a0b\u4ee3\u5165\u7b2c\u4e8c\u4e2a\u65b9\u7a0b\uff1a <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-3ad955c3f2ebeb8ad0bdee85a226c73b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\left.\\begin{array}{l} x+2y-5=0\\\\[2ex] 2x-3y+3=0\\end{array}\\right\\} \\begin{array}{l}\\longrightarrow \\ x=5-2y \\\\[2ex]&amp;\\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"65\" width=\"278\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-13c38ef2a3a9652f98e85ca3971ea19e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"2(5-2y)-3y+3=0\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"174\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d36818c4d56435c0bd61b5e8d08f68d9_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"10-4y-3y=3\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"129\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-7e8fe95b04b3335d2afeb7f50c4329e2_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"-4y-3y=3-10\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"143\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-033bc2f0282c34eecb1e61e554ba16ae_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"-7y=-7\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"78\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d924d2b97f62476d7a2c2cebd1a05da6_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y=\\cfrac{-7}{-7} = 1\" title=\"Rendered by QuickLaTeX.com\" height=\"39\" width=\"97\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p>\u4e00\u65e6\u6211\u4eec\u77e5\u9053\u672a\u77e5\u7684\u4ef7\u503c\u6709\u591a\u5c11<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-0af556714940c351c933bba8cf840796_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"y\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"9\" style=\"vertical-align: -4px;\"><\/p>\n<p>\u6211\u4eec\u5c06\u5176\u503c\u4ee3\u5165\u627e\u5230\u7684\u8868\u8fbe\u5f0f\u4e2d<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-845f2902b8bebf60c3c7372a7fbe4d02_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x:\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"19\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-8480e00ce7c565bee32c0c14b72575b9_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x=5-2y \\ \\xrightarrow{y \\ = \\ 1} \\ x=5-2\\cdot 1\" title=\"Rendered by QuickLaTeX.com\" height=\"24\" width=\"245\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-4f1e7a4af8719584d8cb8f50cecb353c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x = 5-2 = 3\" title=\"Rendered by QuickLaTeX.com\" height=\"13\" width=\"106\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p>\u56e0\u6b64\uff0c\u65b9\u7a0b\u7ec4\u7684\u89e3\u5c31\u662f\u4e24\u6761\u7ebf\u7684\u4ea4\u70b9\u3002\u800c\u8fd9\u4e00\u70b9\u662f<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-acb8c599ed9d06fa842a6b66ce97a4ab_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\bm{(3,1)}.\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"42\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"recta-secante-a-una-circunferencia\"><\/span>\u7ebf\u4e0e\u5706\u76f8\u4ea4<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u901a\u5e38\uff0c\u5f53\u6211\u4eec\u8bf4\u4e24\u6761\u7ebf\u76f8\u4ea4\u65f6\uff0c\u6211\u4eec\u6307\u7684\u662f\u6211\u4eec\u521a\u624d\u770b\u5230\u7684\u6982\u5ff5\u3002\u7136\u800c\uff0c\u5728\u51e0\u4f55\u4e2d\uff0c\u5272\u7ebf\u8fd8\u6709\u53e6\u4e00\u79cd\u542b\u4e49\uff1a<\/p>\n<p><strong>\u4e0e\u5706\u76f8\u4ea4\u7684\u76f4\u7ebf<\/strong>\u662f\u5728\u4e24\u4e2a\u4e0d\u540c\u70b9\u4e0e\u5706\uff08\u6216\u66f2\u7ebf\uff09\u76f8\u4ea4\u7684\u76f4\u7ebf\u3002 <\/p>\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/ligne-secante-avec-un-cercle.webp\" alt=\"\u4e0e\u5706\u76f8\u4ea4\u7684\u7ebf\" class=\"wp-image-1781\" width=\"193\" height=\"245\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<p>\u4e0e\u5c0f\u5b66\u4e2d\u901a\u5e38\u6559\u6388\u7684\u4e24\u6761\u76f8\u4ea4\u7ebf\u7684\u6982\u5ff5\u4e0d\u540c\uff0c\u4e0e\u5706\u76f8\u4ea4\u7684\u7ebf\u7684\u5b9a\u4e49\u4ee5\u53ca\u7ebf\u4e0e\u5706\u7684\u6240\u6709\u76f8\u5bf9\u4f4d\u7f6e\u7ecf\u5e38\u5728\u540e\u9762\u7684\u8bfe\u7a0b\u4e2d\u5b66\u4e60\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u6b64\u9875\u9762\u4e0a\uff0c\u60a8\u5c06\u627e\u5230\u6709\u5173\u5272\u7ebf\u7684\u6240\u6709\u5185\u5bb9\uff1a\u5b83\u4eec\u7684\u542b\u4e49\u3001\u5b58\u5728\u7684\u4e0d\u540c\u7c7b\u578b\u3001\u5982\u4f55\u77e5\u9053\u4e24\u6761\u7ebf\u662f\u5426\u5272\u7ebf\u3001\u5982\u4f55\u627e\u5230\u5b83\u4eec\u7684\u516c\u5171 &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/mathority.org\/cn\/%e7%9b%b8%e4%ba%a4%e7%ba%bf%e7%a4%ba%e4%be%8b\/\"> <span class=\"screen-reader-text\">\u76f8\u4ea4\u7ebf<\/span> \u67e5\u770b\u5168\u6587 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