{"id":892,"date":"2026-05-05T06:05:17","date_gmt":"2026-05-05T06:05:17","guid":{"rendered":"https:\/\/79.buffdemo.com\/index.php\/2026\/05\/05\/86-bai-toan-tong-on-phan-ham-so-thay-do-van-duc\/"},"modified":"2026-05-05T07:46:11","modified_gmt":"2026-05-05T07:46:11","slug":"86-bai-toan-tong-on-phan-ham-so-thay-do-van-duc","status":"publish","type":"post","link":"https:\/\/79.buffdemo.com\/index.php\/2026\/05\/05\/86-bai-toan-tong-on-phan-ham-so-thay-do-van-duc\/","title":{"rendered":"86 B\u00e0i To\u00e1n T\u1ed5ng \u00d4n Ph\u1ea7n H\u00e0m S\u1ed1 Th\u1ea7y \u0110\u1ed7 V\u0103n \u0110\u1ee9c"},"content":{"rendered":"<p>B\u1ea1n \u0111ang \u00f4n t\u1eadp ph\u1ea7n H\u00e0m s\u1ed1 To\u00e1n 12 nh\u01b0ng v\u1eabn th\u01b0\u1eddng xuy\u00ean b\u1ecb \u201ck\u1eb9t\u201d \u1edf nh\u1eefng c\u00e2u h\u1ecfi v\u1eadn d\u1ee5ng trong \u0111\u1ec1 thi THPT Qu\u1ed1c Gia? \u0110\u00e2y v\u1ed1n l\u00e0 chuy\u00ean \u0111\u1ec1 chi\u1ebfm s\u1ed1 l\u01b0\u1ee3ng l\u1edbn c\u00e2u h\u1ecfi v\u00e0 th\u01b0\u1eddng quy\u1ebft \u0111\u1ecbnh tr\u1ef1c ti\u1ebfp \u0111\u1ebfn m\u1ed1c 8 \u2013 9+ \u0111i\u1ec3m, nh\u01b0ng kh\u00f4ng \u00edt h\u1ecdc sinh m\u1ea5t h\u00e0ng tu\u1ea7n v\u1eabn loay hoay v\u00ec ch\u01b0a c\u00f3 ph\u01b0\u01a1ng ph\u00e1p h\u1ec7 th\u1ed1ng b\u00e0i b\u1ea3n. <strong>86 B\u00e0i To\u00e1n T\u1ed5ng \u00d4n Ph\u1ea7n H\u00e0m S\u1ed1 Th\u1ea7y \u0110\u1ed7 V\u0103n \u0110\u1ee9c <\/strong>s\u1ebd gi\u00fap b\u1ea1n c\u1ee7ng c\u1ed1 to\u00e0n di\u1ec7n l\u00fd thuy\u1ebft tr\u1ecdng t\u00e2m m\u00e0 c\u00f2n r\u00e8n luy\u1ec7n 86 d\u1ea1ng b\u00e0i \u201cxuy\u00ean su\u1ed1t\u201d t\u1eeb c\u01a1 b\u1ea3n \u0111\u1ebfn n\u00e2ng cao, \u0111\u1ea3m b\u1ea3o \u0111\u1ee7 n\u0103ng l\u1ef1c x\u1eed l\u00fd c\u00e1c c\u00e2u h\u00e0m s\u1ed1 trong \u0111\u1ec1 ch\u00ednh th\u1ee9c. H\u00f4m nay, <a href=\"https:\/\/tailieuonthi.edu.vn\/\" rel=\"noopener\" target=\"_blank\"><strong>Tailieuonthi<\/strong><\/a> s\u1ebd chia s\u1ebb chi ti\u1ebft v\u1ec1 b\u1ed9 b\u00e0i li\u1ec7u h\u1eefu \u00edch n\u00e0y!<\/p>\n<h2><strong>N\u1ed9i dung 86 B\u00e0i To\u00e1n T\u1ed5ng \u00d4n Ph\u1ea7n H\u00e0m S\u1ed1 Th\u1ea7y \u0110\u1ed7 V\u0103n \u0110\u1ee9c<\/strong><\/h2>\n<p><strong>86 B\u00e0i To\u00e1n T\u1ed5ng \u00d4n Ph\u1ea7n H\u00e0m S\u1ed1 Th\u1ea7y \u0110\u1ed7 V\u0103n \u0110\u1ee9c<\/strong> l\u00e0 m\u1ed9t b\u1ed9 t\u1ed5ng h\u1ee3p c\u00e1c d\u1ea1ng to\u00e1n h\u00e0m s\u1ed1 th\u01b0\u1eddng g\u1eb7p, \u0111\u01b0\u1ee3c chia th\u00e0nh nhi\u1ec1u ph\u1ea7n r\u00f5 r\u00e0ng, gi\u00fap h\u1ecdc sinh d\u1ec5 d\u00e0ng ti\u1ebfp c\u1eadn v\u00e0 \u00f4n luy\u1ec7n:<\/p>\n<ul>\n<li><strong>Ph\u1ea7n 1 \u2013 \u0110\u01a1n \u0111i\u1ec7u:<\/strong> Bao g\u1ed3m c\u00e1c b\u00e0i to\u00e1n li\u00ean quan \u0111\u1ebfn t\u00ednh \u0111\u1ed3ng bi\u1ebfn, ngh\u1ecbch bi\u1ebfn c\u1ee7a h\u00e0m s\u1ed1. \u0110\u00e2y l\u00e0 n\u1ec1n t\u1ea3ng quan tr\u1ecdng \u0111\u1ec3 kh\u1ea3o s\u00e1t s\u1ef1 bi\u1ebfn thi\u00ean c\u1ee7a h\u00e0m s\u1ed1.<\/li>\n<li><strong>Ph\u1ea7n 2 \u2013 C\u1ef1c tr\u1ecb:<\/strong> T\u1eadp trung v\u00e0o c\u00e1c b\u00e0i to\u00e1n t\u00ecm \u0111i\u1ec3m c\u1ef1c \u0111\u1ea1i, c\u1ef1c ti\u1ec3u c\u1ee7a h\u00e0m s\u1ed1, s\u1ed1 \u0111i\u1ec3m c\u1ef1c tr\u1ecb v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 li\u00ean quan.<\/li>\n<li><strong>Ph\u1ea7n 3 \u2013 Min Max:<\/strong> \u0110\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c t\u00ecm gi\u00e1 tr\u1ecb l\u1edbn nh\u1ea5t, nh\u1ecf nh\u1ea5t c\u1ee7a h\u00e0m s\u1ed1 tr\u00ean m\u1ed9t \u0111o\u1ea1n ho\u1eb7c kho\u1ea3ng x\u00e1c \u0111\u1ecbnh.<\/li>\n<li><strong>Ph\u1ea7n 4 \u2013 Ti\u1ec7m c\u1eadn:<\/strong> H\u01b0\u1edbng d\u1eabn c\u00e1ch x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111\u01b0\u1eddng ti\u1ec7m c\u1eadn \u0111\u1ee9ng, ti\u1ec7m c\u1eadn ngang v\u00e0 ti\u1ec7m c\u1eadn xi\u00ean c\u1ee7a \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1.<\/li>\n<li><strong>Ph\u1ea7n 5 \u2013 \u0110\u1ed3 th\u1ecb:<\/strong> Ph\u00e2n t\u00edch c\u00e1c d\u1ea1ng \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1, nh\u1eadn di\u1ec7n h\u00e0m s\u1ed1 qua \u0111\u1ed3 th\u1ecb v\u00e0 \u1ee9ng d\u1ee5ng \u0111\u1ed3 th\u1ecb \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c b\u00e0i to\u00e1n li\u00ean quan.<\/li>\n<\/ul>\n<p>M\u1ed7i ph\u1ea7n \u0111\u1ec1u \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u1edbi c\u00e1c c\u00e2u h\u1ecfi \u0111a d\u1ea1ng, t\u1eeb c\u01a1 b\u1ea3n \u0111\u1ebfn n\u00e2ng cao, c\u00f3 \u0111\u00e1p \u00e1n chi ti\u1ebft gi\u00fap ng\u01b0\u1eddi h\u1ecdc t\u1ef1 ki\u1ec3m tra v\u00e0 c\u1ee7ng c\u1ed1 ki\u1ebfn th\u1ee9c.<\/p>\n<h2><strong>86 B\u00e0i To\u00e1n T\u1ed5ng \u00d4n Ph\u1ea7n H\u00e0m S\u1ed1 Th\u1ea7y \u0110\u1ed7 V\u0103n \u0110\u1ee9c c\u00f3 \u0111i\u1ec3m g\u00ec n\u1ed5i tr\u1ed9i?<\/strong><\/h2>\n<p><strong>86 B\u00e0i To\u00e1n T\u1ed5ng \u00d4n Ph\u1ea7n H\u00e0m S\u1ed1 Th\u1ea7y \u0110\u1ed7 V\u0103n \u0110\u1ee9c<\/strong> \u0111\u01b0\u1ee3c bi\u00ean so\u1ea1n chuy\u00ean s\u00e2u, t\u1eadp trung 100% v\u00e0o chuy\u00ean \u0111\u1ec1 H\u00e0m s\u1ed1 \u2013 ph\u1ea7n ki\u1ebfn th\u1ee9c tr\u1ecdng y\u1ebfu nh\u1ea5t c\u1ee7a To\u00e1n 12. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c \u01b0u \u0111i\u1ec3m c\u1ee7a t\u00e0i li\u1ec7u:<\/p>\n<ul>\n<li><strong>T\u00f3m t\u1eaft ki\u1ebfn th\u1ee9c tr\u1ecdng t\u00e2m:<\/strong> L\u00fd thuy\u1ebft c\u1ed1t l\u00f5i, c\u00f4ng th\u1ee9c quan tr\u1ecdng th\u01b0\u1eddng g\u1eb7p trong c\u00e1c d\u1ea1ng b\u00e0i kh\u1ea3o s\u00e1t v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a h\u00e0m s\u1ed1.<\/li>\n<li><strong>B\u00e1m s\u00e1t c\u1ea5u tr\u00fac \u0111\u1ec1 thi THPT:<\/strong> C\u00e1c b\u00e0i to\u00e1n \u0111\u01b0\u1ee3c tuy\u1ec3n ch\u1ecdn v\u00e0 thi\u1ebft k\u1ebf d\u1ef1a tr\u00ean xu h\u01b0\u1edbng ra \u0111\u1ec1 m\u1edbi nh\u1ea5t, \u0111\u1ea3m b\u1ea3o h\u1ecdc sinh l\u00e0m quen v\u1edbi m\u1ecdi d\u1ea1ng c\u00e2u h\u1ecfi c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n trong k\u1ef3 thi.<\/li>\n<li><strong>H\u01b0\u1edbng d\u1eabn gi\u1ea3i chi ti\u1ebft:<\/strong> M\u1ed7i b\u00e0i \u0111\u1ec1u c\u00f3 l\u1eddi gi\u1ea3i chi ti\u1ebft, ch\u1ec9 ra t\u01b0 duy ti\u1ebfp c\u1eadn t\u1eebng b\u01b0\u1edbc, gi\u00fap h\u1ecdc sinh kh\u00f4ng ch\u1ec9 gi\u1ea3i \u0111\u01b0\u1ee3c b\u00e0i m\u00e0 c\u00f2n h\u1ecdc \u0111\u01b0\u1ee3c c\u00e1ch ph\u00e2n t\u00edch \u0111\u1ec1.<\/li>\n<li><strong>B\u00e0i t\u1eadp t\u1ef1 luy\u1ec7n k\u00e8m \u0111\u00e1p \u00e1n:<\/strong> \u0110\u1ec3 h\u1ecdc sinh t\u1ef1 ki\u1ec3m tra m\u1ee9c \u0111\u1ed9 n\u1eafm v\u1eefng ki\u1ebfn th\u1ee9c, t\u1eeb \u0111\u00f3 \u0111i\u1ec1u ch\u1ec9nh l\u1ed7 h\u1ed5ng ngay trong qu\u00e1 tr\u00ecnh \u00f4n t\u1eadp.<\/li>\n<\/ul>\n<h2><strong>T\u1ea3i 86 B\u00e0i To\u00e1n T\u1ed5ng \u00d4n Ph\u1ea7n H\u00e0m S\u1ed1 Th\u1ea7y \u0110\u1ed7 V\u0103n \u0110\u1ee9c<\/strong><\/h2>\n<p>\u0110\u1ec3 l\u00e0m ch\u1ee7 chuy\u00ean \u0111\u1ec1 H\u00e0m s\u1ed1 v\u00e0 t\u1ef1 tin \u0111\u1ea1t t\u1eeb 8 \u2013 9 \u0111i\u1ec3m trong k\u1ef3 thi THPT Qu\u1ed1c gia, <strong>86 B\u00e0i To\u00e1n T\u1ed5ng \u00d4n Ph\u1ea7n H\u00e0m S\u1ed1 Th\u1ea7y \u0110\u1ed7 V\u0103n \u0110\u1ee9c<\/strong> l\u00e0 t\u00e0i li\u1ec7u to\u00e1n 12 kh\u00f4ng th\u1ec3 thi\u1ebfu. H\u00e3y t\u1ea3i ngay b\u1ed9 <a href=\"https:\/\/tailieuonthi.edu.vn\/lop-12\/toan-12\/\" rel=\"noopener\" target=\"_blank\"><strong>t\u00e0i li\u1ec7u to\u00e1n 12<\/strong><\/a> n\u00e0y v\u1ec1 \u0111\u1ec3 b\u1eaft \u0111\u1ea7u h\u00e0nh tr\u00ecnh \u00f4n luy\u1ec7n hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u1ea1t k\u1ebft qu\u1ea3 nh\u01b0 mong \u0111\u1ee3i!<\/p>\n<p><a class=\"custom-button\" href=\"https:\/\/drive.google.com\/file\/d\/13xXSjiBKGRQ0J7rU6qm-SdCeu0SxVFaw\/view\" rel=\"nofollow noopener\" target=\"_blank\">T\u1ea3i 86 B\u00e0i To\u00e1n T\u1ed5ng \u00d4n Ph\u1ea7n H\u00e0m S\u1ed1 Th\u1ea7y \u0110\u1ed7 V\u0103n \u0110\u1ee9c<\/a><\/p>\n<p>T\u00e0i li\u1ec7u d\u1ea1ng PDF n\u00e0y \u0111\u01b0\u1ee3c chia s\u1ebb \u0111\u1ec3 ti\u1ec7n h\u1ecdc t\u1eadp, nh\u01b0ng c\u00f3 th\u1ec3 c\u00f3 sai s\u00f3t. B\u1ea1n n\u00ean mua s\u00e1ch g\u1ed1c \u0111\u1ec3 nh\u1eadn b\u1ea3n ho\u00e0n h\u1ea3o v\u00e0 h\u1ed7 tr\u1ee3 t\u00e1c gi\u1ea3.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>B\u1ea1n \u0111ang \u00f4n t\u1eadp ph\u1ea7n H\u00e0m s\u1ed1 To\u00e1n 12 nh\u01b0ng v\u1eabn th\u01b0\u1eddng xuy\u00ean b\u1ecb \u201ck\u1eb9t\u201d \u1edf nh\u1eefng c\u00e2u h\u1ecfi v\u1eadn d\u1ee5ng trong \u0111\u1ec1 thi THPT Qu\u1ed1c Gia? \u0110\u00e2y v\u1ed1n l\u00e0 chuy\u00ean \u0111\u1ec1 chi\u1ebfm s\u1ed1 l\u01b0\u1ee3ng l\u1edbn c\u00e2u h\u1ecfi v\u00e0 th\u01b0\u1eddng quy\u1ebft \u0111\u1ecbnh tr\u1ef1c ti\u1ebfp \u0111\u1ebfn m\u1ed1c 8 \u2013 9+ \u0111i\u1ec3m, nh\u01b0ng kh\u00f4ng \u00edt h\u1ecdc sinh [&#8230;]\n","protected":false},"author":1,"featured_media":2090,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[34,10],"class_list":["post-892","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-toan-12","tag-thay-do-van-duc","tag-toan-12"],"_links":{"self":[{"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/posts\/892","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/comments?post=892"}],"version-history":[{"count":1,"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/posts\/892\/revisions"}],"predecessor-version":[{"id":2091,"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/posts\/892\/revisions\/2091"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/media\/2090"}],"wp:attachment":[{"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/media?parent=892"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/categories?post=892"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/79.buffdemo.com\/index.php\/wp-json\/wp\/v2\/tags?post=892"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}