{"id":26829,"date":"2023-12-07T03:09:33","date_gmt":"2023-12-07T03:09:33","guid":{"rendered":"https:\/\/masterskills.org\/blog\/qui-luat-cau-the-law-of-demand-la-gi.html"},"modified":"2023-12-22T14:54:22","modified_gmt":"2023-12-22T07:54:22","slug":"qui-luat-cau-the-law-of-demand-la-gi","status":"publish","type":"post","link":"https:\/\/masterskills.org\/blog\/qui-luat-cau-the-law-of-demand-la-gi.html","title":{"rendered":"Qui lu\u1eadt c\u1ea7u (The law of demand) l\u00e0 g\u00ec?"},"content":{"rendered":"<div class=\"vnbcbc-body vceditor-content wi-active\" data-role=\"content\">\n<div class=\"VCSortableInPreviewMode\" type=\"Photo\" style=\"\">\n<div><img decoding=\"async\" src=\"https:\/\/masterskills.org\/blog\/wp-content\/uploads\/\/12\/xedbpimhqm1410817037807-15687016252211774991235.jpg\" id=\"img_2be322f0-d914-11e9-b1d5-9936ce09ee2b\" w=\"1024\" h=\"768\" alt=\"XEdbPimHqm_1410817037807\" title=\"XEdbPimHqm_1410817037807\" rel=\"lightbox\" photoid=\"2be322f0-d914-11e9-b1d5-9936ce09ee2b\" type=\"photo\" style=\"max-width:100%;\" data-original=\"https:\/\/masterskills.org\/blog\/wp-content\/uploads\/\/12\/xedbpimhqm1410817037807-15687016252211774991235.jpg\" width=\"\" height=\"\"><\/div>\n<div class=\"PhotoCMS_Caption\">\n<p>H\u00ecnh minh h\u1ecda (Ngu\u1ed3n: haikudeck)<\/p>\n<\/div>\n<\/div>\n<h2><font style=\"line-height: 22px; font-size: 22px;\" color=\"#3d85c6\">Qui lu\u1eadt c\u1ea7u<\/font><\/h2>\n<p><b>Kh\u00e1i ni\u1ec7m<\/b><\/p>\n<p><b>Qui lu\u1eadt c\u1ea7u<\/b> trong ti\u1ebfng Anh g\u1ecdi l\u00e0:\u00a0<b>The law of demand.<\/b><\/p>\n<p>Qui lu\u1eadt c\u1ea7u: N\u1ebfu c\u00e1c \u0111i\u1ec1u ki\u1ec7n kh\u00e1c \u0111\u01b0\u1ee3c gi\u1eef nguy\u00ean, kh\u00f4ng thay \u0111\u1ed5i, l\u01b0\u1ee3ng c\u1ea7u v\u1ec1 m\u1ed9t lo\u1ea1i h\u00e0ng ho\u00e1 \u0111i\u1ec3n h\u00ecnh s\u1ebd t\u0103ng l\u00ean khi m\u1ee9c gi\u00e1 c\u1ee7a ch\u00ednh h\u00e0ng ho\u00e1 n\u00e0y h\u1ea1 xu\u1ed1ng v\u00e0 ng\u01b0\u1ee3c l\u1ea1i.\u00a0<\/p>\n<h3><font style=\"line-height: 22px; font-size: 22px;\" color=\"#3d85c6\">V\u00ed d\u1ee5 minh h\u1ecda<\/font><\/h3>\n<p>Nh\u01b0 s\u1ed1 li\u1ec7u \u1edf b\u1ea3ng 1 cho th\u1ea5y, khi gi\u00e1 th\u1ecbt b\u00f2 l\u00e0 100 ngh\u00ecn \u0111\u1ed3ng 1 kg, l\u01b0\u1ee3ng th\u1ecbt b\u00f2 m\u00e0 nh\u1eefng ng\u01b0\u1eddi ti\u00eau d\u00f9ng mu\u1ed1n mua trong kho\u1ea3ng th\u1eddi gian ch\u00fang ta xem x\u00e9t l\u00e0 30.000 kg hay 30 t\u1ea5n.\u00a0<\/p>\n<p>Khi th\u1ecbt b\u00f2 tr\u1edf n\u00ean r\u1ebb \u0111i, gi\u00e1 c\u1ee7a n\u00f3 h\u1ea1 xu\u1ed1ng c\u00f2n 90 ngh\u00ecn \u0111\u1ed3ng 1 kg, l\u01b0\u1ee3ng c\u1ea7u v\u1ec1 th\u1ecbt b\u00f2 s\u1ebd t\u0103ng l\u00ean th\u00e0nh 35 t\u1ea5n. N\u1ebfu gi\u00e1 th\u1ecbt b\u00f2 ti\u1ebfp t\u1ee5c h\u1ea1, v\u00ed d\u1ee5 nh\u01b0 c\u00f2n l\u00e0 80, 70 ngh\u00ecn \u0111\u1ed3ng m\u1ed9t kg, th\u00ec m\u1ee9c c\u1ea7u v\u1ec1 th\u1ecbt b\u00f2 c\u0169ng s\u1ebd gia t\u0103ng t\u01b0\u01a1ng \u1ee9ng th\u00e0nh 40, 45 t\u1ea5n.\u00a0<\/p>\n<div class=\"VCSortableInPreviewMode\" type=\"Photo\" style=\"\">\n<div><\/div>\n<div class=\"PhotoCMS_Caption\">\n<p>B\u1ea3ng 1: C\u1ea7u v\u1ec1 th\u1ecbt b\u00f2 c\u1ee7a m\u1ed9t ng\u01b0\u1eddi ti\u00eau d\u00f9ng<\/p>\n<\/div>\n<\/div>\n<p>C\u00f3 th\u1ec3 l\u00ed gi\u1ea3i nh\u01b0 th\u1ebf n\u00e0o v\u1ec1 qui lu\u1eadt c\u1ea7u n\u00e0y? T\u1ea1i sao khi gi\u00e1 th\u1ecbt b\u00f2 h\u1ea1 xu\u1ed1ng th\u00ec l\u01b0\u1ee3ng c\u1ea7u v\u1ec1 th\u1ecbt b\u00f2 l\u1ea1i t\u0103ng l\u00ean?\u00a0\u00a0<\/p>\n<p>\u1ede \u0111\u00e2y, ch\u00fang ta c\u00f3 th\u1ec3 \u0111\u01b0a ra m\u1ed9t s\u1ef1 gi\u1ea3i th\u00edch \u0111\u01a1n gi\u1ea3n v\u1ec1 qui lu\u1eadt n\u00e0y. Khi gi\u00e1 th\u1ecbt b\u00f2 h\u1ea1 xu\u1ed1ng, s\u1ebd c\u00f3 hai hi\u1ec7u \u1ee9ng t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn ng\u01b0\u1eddi ti\u00eau d\u00f9ng.\u00a0<\/p>\n<p>Th\u1ee9 nh\u1ea5t, v\u00ec c\u00e1c \u0111i\u1ec1u ki\u1ec7n kh\u00e1c l\u00e0 gi\u1eef nguy\u00ean, t\u1ee9c gi\u00e1 c\u1ea3 c\u00e1c h\u00e0ng ho\u00e1 kh\u00e1c trong \u0111\u00f3 c\u00f3 c\u00e1c h\u00e0ng ho\u00e1 nh\u01b0 th\u1ecbt g\u00e0, th\u1ecbt l\u1ee3n, c\u00e1 v.v \u2026 \u0111\u01b0\u1ee3c coi l\u00e0 kh\u00f4ng \u0111\u1ed5i, n\u00ean s\u1ef1 ki\u1ec7n gi\u00e1 th\u1ecbt b\u00f2 h\u1ea1 xu\u1ed1ng \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c th\u1ecbt b\u00f2 tr\u1edf n\u00ean r\u1ebb \u0111i m\u1ed9t c\u00e1ch t\u01b0\u01a1ng \u0111\u1ed1i so v\u1edbi c\u00e1c lo\u1ea1i th\u1ef1c ph\u1ea9m kh\u00e1c.\u00a0<\/p>\n<p>Ng\u01b0\u1eddi ti\u00eau d\u00f9ng s\u1ebd c\u00f3 xu h\u01b0\u1edbng thay th\u1ebf m\u1ed9t ph\u1ea7n c\u00e1c th\u1ef1c ph\u1ea9m kh\u00e1c, gi\u1edd \u0111\u00e2y \u0111\u00e3 tr\u1edf n\u00ean \u0111\u1eaft h\u01a1n m\u1ed9t c\u00e1ch t\u01b0\u01a1ng \u0111\u1ed1i, b\u1eb1ng th\u1ecbt b\u00f2. \u0110i\u1ec1u n\u00e0y l\u00e0m cho nhu c\u1ea7u v\u1ec1 th\u1ecbt b\u00f2 t\u0103ng l\u00ean. Hi\u1ec7u \u1ee9ng n\u00e0y g\u1ecdi l\u00e0 hi\u1ec7u \u1ee9ng thay th\u1ebf.\u00a0<\/p>\n<p>Th\u1ee9 hai, khi thu nh\u1eadp danh ngh\u0129a c\u1ee7a ng\u01b0\u1eddi ti\u00eau d\u00f9ng kh\u00f4ng \u0111\u1ed5i, vi\u1ec7c th\u1ecbt b\u00f2 r\u1ebb \u0111i l\u00e0m cho thu nh\u1eadp th\u1ef1c t\u1ebf c\u1ee7a ng\u01b0\u1eddi ti\u00eau d\u00f9ng t\u0103ng l\u00ean. Tr\u1edf n\u00ean kh\u00e1 gi\u1ea3 h\u01a1n, ng\u01b0\u1eddi ti\u00eau d\u00f9ng c\u0169ng s\u1ebd c\u00f3 xu h\u01b0\u1edbng ti\u00eau d\u00f9ng nhi\u1ec1u th\u1ecbt b\u00f2 h\u01a1n. Hi\u1ec7u \u1ee9ng n\u00e0y g\u1ecdi l\u00e0 hi\u1ec7u \u1ee9ng thu nh\u1eadp.\u00a0<\/p>\n<p>Tr\u01b0\u1eddng h\u1ee3p gi\u00e1 h\u00e0ng ho\u00e1 t\u0103ng l\u00ean c\u0169ng c\u00f3 th\u1ec3 gi\u1ea3i th\u00edch t\u01b0\u01a1ng t\u1ef1.<\/p>\n<p>Nh\u01b0 v\u00e2y, tr\u1eeb nh\u1eefng tr\u01b0\u1eddng h\u1ee3p ngo\u1ea1i l\u1ec7, s\u1ef1 thay \u0111\u1ed5i c\u1ee7a gi\u00e1 c\u1ea3 h\u00e0ng ho\u00e1 l\u00e0m cho l\u01b0\u1ee3ng c\u1ea7u v\u1ec1 h\u00e0ng ho\u00e1 thay \u0111\u1ed5i theo h\u01b0\u1edbng ng\u01b0\u1ee3c l\u1ea1i. S\u1ef1 v\u1eadn \u0111\u1ed9ng ng\u01b0\u1ee3c chi\u1ec1u nhau c\u1ee7a hai bi\u1ebfn s\u1ed1 n\u00e0y khi\u1ebfn h\u00e0m s\u1ed1 c\u1ea7u \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t h\u00e0m ngh\u1ecbch bi\u1ebfn.\u00a0<\/p>\n<p>V\u00ec th\u1ebf, n\u1ebfu bi\u1ec3u di\u1ec5n d\u01b0\u1edbi d\u1ea1ng m\u1ed9t h\u00e0m s\u1ed1 tuy\u1ebfn t\u00ednh, QD = aP + b, th\u00ec tham s\u1ed1 a ph\u1ea3i l\u00e0 m\u1ed9t s\u1ed1 \u00e2m. V\u1ec1 m\u1eb7t \u0111\u1ed3 th\u1ecb, qui lu\u1eadt c\u1ea7u cho th\u1ea5y \u0111\u01b0\u1eddng c\u1ea7u \u0111i\u1ec3n h\u00ecnh l\u00e0 m\u1ed9t \u0111\u01b0\u1eddng d\u1ed1c xu\u1ed1ng. \u0110\u00e2y l\u00e0 \u0111\u1eb7c t\u00ednh chung c\u1ee7a \u0111\u1ea1i \u0111a s\u1ed1 \u0111\u01b0\u1eddng c\u1ea7u.<\/p>\n<p><i>(T\u00e0i li\u1ec7u tham kh\u1ea3o: Gi\u00e1o tr\u00ecnh Kinh t\u1ebf Vi m\u00f4, PGS.TS. Ph\u00ed M\u1ea1nh H\u1ed3ng, NXB \u0110\u1ea1i h\u1ecdc Qu\u1ed1c Gia H\u00e0 N\u1ed9i)<\/i><\/p>\n<p><\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<div class=\"vnbcbc-sapo\" data-role=\"sapo\">\n                            Qui lu\u1eadt c\u1ea7u (ti\u1ebfng Anh: The law of demand) th\u1ec3 hi\u1ec7n qui t\u1eafc v\u1ec1 s\u1ef1 thay \u0111\u1ed5i c\u1ee7a m\u1ee9c gi\u00e1 h\u00e0ng ho\u00e1 v\u00e0 l\u01b0\u1ee3ng c\u1ea7u v\u1ec1 h\u00e0ng ho\u00e1 c\u1ee7a ng\u01b0\u1eddi ti\u00eau d\u00f9ng.\n                        <\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[414],"tags":[],"_links":{"self":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts\/26829"}],"collection":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/comments?post=26829"}],"version-history":[{"count":0,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts\/26829\/revisions"}],"wp:attachment":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/media?parent=26829"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/categories?post=26829"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/tags?post=26829"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}