{"id":14752,"date":"2021-11-27T15:47:17","date_gmt":"2021-11-27T08:47:17","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=14752"},"modified":"2021-11-27T15:47:19","modified_gmt":"2021-11-27T08:47:19","slug":"ban-biet-gi-ve-su-cai-tien-cua-ham-rang-gia","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/ban-biet-gi-ve-su-cai-tien-cua-ham-rang-gia\/","title":{"rendered":"B\u1ea1n bi\u1ebft g\u00ec v\u1ec1 s\u1ef1 c\u1ea3i ti\u1ebfn c\u1ee7a h\u00e0m r\u0103ng gi\u1ea3?"},"content":{"rendered":"\n<p>T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 5 &#8211; Arkady Leokum<\/p>\n\n\n\n<p>T\u1eeb th\u1eddi r\u1ea5t xa x\u01b0a, con ng\u01b0\u1eddi \u0111\u00e3 bi\u1ebft thay r\u0103ng t\u1ef1 nhi\u00ean c\u1ee7a m\u00ecnh &#8211; v\u00ec m\u1ed9t l\u00fd do n\u00e0o \u0111\u00f3 g\u1ecb g\u00e3y &#8211; b\u1eb1ng r\u0103ng \u201cgi\u1ea3\u201d. Th\u1eddi \u0111\u00f3, r\u0103ng gi\u1ea3 \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng g\u1ed7, b\u1eb1ng r\u0103ng lo\u00e0i v\u1eadt, th\u1eadm ch\u00ed b\u1eb1ng r\u0103ng c\u1ee7a ng\u01b0\u1eddi kh\u00e1c n\u1eefa. Th\u1ebf r\u1ed3i v\u00e0o cu\u1ed1i th\u1ebf k\u1ef7 XVIII, l\u1ea7n \u0111\u1ea7u ti\u00ean ng\u01b0\u1eddi ta \u0111\u00e3 ch\u1ebf \u0111\u01b0\u1ee3c h\u00e0m r\u0103ng gi\u1ea3 b\u1eb1ng s\u1ee9. Sang \u0111\u1ea7u th\u1ebf k\u1ef7 XIX, vi\u1ec7c l\u00e0m r\u0103ng gi\u1ea3 l\u1ea1i ti\u1ebfn th\u00eam \u0111\u01b0\u1ee3c m\u1ed9t b\u01b0\u1edbc n\u1eefa. \u00d4ng Fonzi, ng\u01b0\u1eddi \u00dd, m\u1ed9t nha s\u0129 h\u00e0nh ngh\u1ec1 \u1edf Paris \u0111\u00e3 l\u00e0m r\u0103ng t\u1eebng chi\u1ebfc m\u1ed9t g\u1eafn tr\u00ean \u201ch\u00e0m\u201d b\u1eb1ng v\u00e0ng ho\u1eb7c platin. R\u0103ng gi\u1ea3 b\u1eb1ng s\u1ee9 \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o Hoa K\u1ef3 t\u1eeb n\u0103m 1817.<\/p>\n\n\n\n<p>B\u01b0\u1edbc ti\u1ebfn k\u1ebf ti\u1ebfp c\u1ee7a h\u00e0m r\u0103ng gi\u1ea3 l\u00e0 b\u1ed9 r\u0103ng \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o sao cho n\u00f3 v\u1eeba h\u1ee3p v\u1edbi khu\u00f4n m\u1eb7t. Tr\u01b0\u1edbc \u0111\u00f3, h\u00e0m r\u0103ng gi\u1ea3 l\u1eafp v\u00e0o l\u00e0m cho khu\u00f4n m\u1eb7t c\u1ee7a ng\u01b0\u1eddi \u0111\u00f3 \u201cbi\u1ebfn d\u1ea1ng\u201d h\u1eb3n \u0111i. Ng\u00e0y nay r\u0103ng gi\u1ea3 \u0111\u01b0\u1ee3c l\u00e0m kh\u00e9o \u0111\u1ebfn n\u1ed7i nh\u00ecn ng\u01b0\u1eddi mang r\u0103ng gi\u1ea3 ta kh\u00f3 m\u00e0 nh\u1eadn ra \u0111\u00f3 l\u00e0 r\u0103ng gi\u1ea3. R\u0103ng gi\u1ea3 \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng s\u1ee9, b\u1eb1ng plastic, b\u1eb1ng th\u1ee7y tinh v\u1edbi h\u00ecnh d\u1ea1ng, k\u00edch c\u1ee1 v\u00e0 m\u00e0u s\u1eafc kh\u00f4ng kh\u00e1c g\u00ec r\u0103ng th\u1eadt. R\u0103ng gi\u1ea3 \u0111\u01b0\u1ee3c g\u1eafn v\u00e0o nh\u1eefng \u201ch\u00e0m\u201d hay l\u00e0 \u201cn\u01b0\u1edbu\u201d gi\u1ea3 l\u00e0m b\u1eb1ng plastic c\u00f3 m\u00e0u s\u1eafc, h\u00ecnh d\u1ea1ng nom y nh\u01b0 \u201cn\u01b0\u1edbu\u201d th\u1eadt.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 5 &#8211; Arkady Leokum T\u1eeb th\u1eddi r\u1ea5t xa x\u01b0a, con ng\u01b0\u1eddi \u0111\u00e3 bi\u1ebft thay r\u0103ng t\u1ef1 nhi\u00ean c\u1ee7a m\u00ecnh &#8211; v\u00ec m\u1ed9t l\u00fd do n\u00e0o \u0111\u00f3 g\u1ecb g\u00e3y &#8211; b\u1eb1ng r\u0103ng \u201cgi\u1ea3\u201d. Th\u1eddi \u0111\u00f3, r\u0103ng gi\u1ea3 \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng g\u1ed7, b\u1eb1ng r\u0103ng lo\u00e0i [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15],"tags":[],"class_list":["post-14752","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/14752","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=14752"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/14752\/revisions"}],"predecessor-version":[{"id":14753,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/14752\/revisions\/14753"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=14752"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=14752"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=14752"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}