\n\u5b78\u751f\u5b78 y=f(x) \u6642\uff0c\u7d93\u7531\u8001\u5e2b\u7684\u8aaa\u660e\uff0c\u554f\u51fd\u6578\u95dc\u4fc2\u6642\uff0c\u5927\u90e8\u4efd\u90fd\u80fd\u56de\u7b54\u51fa y \u53ef\u4ee5\u8868\u793a\u70ba f(x)
\n\u4f46\u662f\u8a08\u7b97\u6642\uff0c\u6709\u4e9b\u5b78\u751f\u5e38\u6703\u51fa\u932f\uff0c\u4f8b\u5982 f(x)=ax+b, \u904e\u5169\u9ede (2,5)\u3001(1,3) \u6c42 a,b \u7684\u984c\u76ee\u6642\uff0c
\n\u5b78\u751f\u77e5\u9053\u9ede\u5728\u51fd\u6578\u7684\u7dda\u4e0a\u6642\uff0c\u5c07\u9ede\u4ee3\u9032\u95dc\u4fc2\u5f0f\uff0c\u6703\u4f7f\u7b49\u5f0f\u6210\u7acb\uff0c\u4f46\u662f\u4ee3\u9032\u53bb\u5c31\u6703\u767c\u751f\u554f\u984c,
\n\u4f8b\u5982\u5b78\u751f\u6703\u5beb\u51fa\u4e0b\u9762\u932f\u8aa4\u7684\u5f0f\u5b50\uff1a\n<\/p>\n
\n[@more@]\n<\/p>\n
\nx \u5ea7\u6a19\u4ee3\u63db\u5f0f\u5b50\u5de6\u908a\u7684 x, \u537b\u5c07 y \u5ea7\u6a19\u4ee3\u63db\u5f0f\u5b50\u53f3\u908a\u7684 x\n<\/p>\n
\nf(2) = 5a + b
\nf(1) = 3a + b\n<\/p>\n
\n\u6216\u8a31\u80fd\u8ddf\u5b78\u751f\u8aaa\u660e, \u540c\u4e00\u500b\u5f0f\u5b50\u4e2d\u7684\u672a\u77e5\u6578, \u90fd\u662f\u540c\u4e00\u500b\u672a\u77e5\u6578,
\nx \u5c31\u662f x, \u6240\u4ee5 x \u662f\u4ec0\u9ebc\u6578\u5b78, \u5c31\u5c07\u6240\u6709\u7684 x \u90fd\u6539\u6210\u90a3\u500b\u6578\u5b57\n<\/p>\n
\n\u5b78\u751f\u4e5f\u53ef\u80fd\u5beb\u51fa\u53e6\u4e00\u7a2e\u7684\u932f\u8aa4, \u5c31\u662f\u5c07 y \u5ea7\u6a19\u653e\u9032\u5de6\u908a\u7684 x \u4e2d\n<\/p>\n
\nf(5) = 2a + b
\nf(3) = 1a + b\n<\/p>\n
\n\u6216\u8a31\u80fd\u8ddf\u5b78\u751f\u8aaa\u660e, f(x) = y,
\n\u6240\u4ee5 f(2) = y = 5, \u8981\u5beb\u6210<\/p>\n
f(2) = 2a + b
\n ↓
\n 5 = 2a + b<\/p>\n
\u9019\u6a23\u591a\u505a\u5e7e\u500b\u6b65\u9a5f, \u6216\u8a31\u5b78\u751f\u6703\u6bd4\u8f03\u6e05\u695a,
\n\u4e5f\u5c31\u662f x \u7684\u51fd\u6578\u6703\u751f\u6210 y, \u5c07 x \u4ee3\u9032 f(x) \u4e4b\u5f8c, \u6703\u8b8a\u6210 y\n<\/p>\n
\n\u5982\u679c\u5176\u5b83\u6559\u80b2\u5148\u9032\u6709\u4efb\u4f55\u60f3\u6cd5, \u6b61\u8fce\u4e00\u540c\u8a0e\u8ad6\u53ca\u6307\u6559.<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u751f\u5b78 y=f(x) \u6642\uff0c\u7d93\u7531\u8001\u5e2b\u7684\u8aaa\u660e\uff0c\u554f\u51fd\u6578\u95dc\u4fc2\u6642\uff0c\u5927\u90e8\u4efd\u90fd\u80fd\u56de\u7b54\u51fa y \u53ef\u4ee5\u8868\u793a\u70ba f(x) \u4f46\u662f\u8a08\u7b97\u6642… » \u95b1\u8b80\u5168\u6587<\/a><\/p>\n","protected":false},"author":76,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33],"tags":[],"class_list":["post-1239","post","type-post","status-publish","format-standard","hentry","category-c-16869"],"meta_key":{"lt_post_id":["101438"],"_jetpack_related_posts_cache":["a:1:{s:32:\"8f6677c9d6b0f903e98ad32ec61f8deb\";a:2:{s:7:\"expires\";i:1578931715;s:7:\"payload\";a:0:{}}}"]},"_links":{"self":[{"href":"https:\/\/2blog.ilc.edu.tw\/2341\/wp-json\/wp\/v2\/posts\/1239"}],"collection":[{"href":"https:\/\/2blog.ilc.edu.tw\/2341\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/2blog.ilc.edu.tw\/2341\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/2341\/wp-json\/wp\/v2\/users\/76"}],"replies":[{"embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/2341\/wp-json\/wp\/v2\/comments?post=1239"}],"version-history":[{"count":0,"href":"https:\/\/2blog.ilc.edu.tw\/2341\/wp-json\/wp\/v2\/posts\/1239\/revisions"}],"wp:attachment":[{"href":"https:\/\/2blog.ilc.edu.tw\/2341\/wp-json\/wp\/v2\/media?parent=1239"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/2341\/wp-json\/wp\/v2\/categories?post=1239"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/2blog.ilc.edu.tw\/2341\/wp-json\/wp\/v2\/tags?post=1239"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}